critical thinking in chemistry

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Critical thinking in the lab (and beyond)

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How to alter existing activities to foster scientific skills

Although many of us associate chemistry education with the laboratory, there remains a lack of evidence that correlates student learning with practical work. It is vital we continue to improve our understanding of how students learn from practical work, and we should devise methods that maximise the benefits. Jon-Marc Rodriguez and Marcy Towns, researchers at Purdue University, US, recently outlined an approach to modify existing practical activities to promote critical thinking in students, supporting enhanced learning. [1]

Although many of us associate chemistry education with the laboratory, there remains a lack of evidence that correlates student learning with practical work. It is vital we continue to improve our understanding of how students learn from practical work, and we should devise methods that maximise the benefits. Jon-Marc Rodriguez and Marcy Towns, researchers at Purdue University, US, recently outlined an approach to modify existing practical activities to promote critical thinking in students , supporting enhanced learning.

Source: © Science Photo Library

After an experiment, rather than asking a question, task students with plotting a graph; it’ll induce critical thinking and engagement with science practices

Jon-Marc and Marcy focused on critical thinking as a skill needed for successful engagement with the eight ‘science practices’. These practices come from a 2012 framework for science education published by the US National Research Council. The eight practices are: asking questions; developing and using models; planning and carrying out investigations; analysing and interpreting data; using mathematics and computational thinking; constructing explanations; engaging in argument from evidence; and obtaining, evaluating and communicating information. Such skills are widely viewed as integral to an effective chemistry programme. Practising scientists use multiple tools simultaneously when addressing a question, and well-designed practical activities that give students the opportunity to engage with numerous science practices will promote students’ scientific development.

The Purdue researchers chose to examine a traditional laboratory experiment on acid-base titrations because of its ubiquity in chemistry teaching. They characterised the pre- and post-lab questions associated with this experiment in terms of their alignment with the eight science practices. They found only two of ten pre- and post-lab questions elicited engagement with science practices, demonstrating the limitations of the traditional approach. Notably, the pre-lab questions included numerous calculations that were not considered to promote science practices-engagement. Students could answer the calculations algorithmically, with no consideration of the significance of their answer.

Next, Jon-Marc and Marcy modified the experiment and rewrote the pre- and post-lab questions in order to foster engagement with the science practices. They drew on recent research that recommends minimising the amount of information given to students and developing a general understanding of the underlying theory.  [2] The modified set of questions were fewer, with a greater emphasis on conceptual understanding. They questioned aspects such as the suitability of the method and the central question behind the experiment. Questions were more open and introduced greater scope for developing critical thinking.

Next, Jon-Marc and Marcy modified the experiment and rewrote the pre- and post-lab questions in order to foster engagement with the science practices. They drew on recent research that recommends minimising the amount of information given to students and developing a general understanding of the underlying theory. The modified set of questions were fewer, with a greater emphasis on conceptual understanding. They questioned aspects such as the suitability of the method and the central question behind the experiment. Questions were more open and introduced greater scope for developing critical thinking.

In taking an existing protocol and reframing it in terms of science practices, the authors demonstrate an approach instructors can use to adapt their existing activities to promote critical thinking. Using this approach, instructors do not have to spend excessive time creating new activities. Additionally, instructors will have the opportunity to research the impact of their approach on student learning in the teaching laboratory.

Teaching tips

Question phrasing and the steps students should go through to get an answer are instrumental in inducing critical thinking and engagement with science practices. As noted above, simple calculation-based questions do not prompt students to consider the significance of the values calculated. Questions should:

• refer to an event, observation or phenomenon;
• ask students to perform a calculation or demonstrate a relationship between variables;
• ask students to provide a consequence or interpretation (not a restatement) in some form (eg a diagram or graph) based on their results, in the context of the event, observation or phenomenon.

This is more straightforward than it might first seem. The example question Jon-Marc and Marcy give requires students to calculate percentage errors for two titration techniques before discussing the relative accuracy of the methods. Students have to use their data to explain which method was more accurate, prompting a much higher level of engagement than a simple calculation.

As pre-lab preparation, ask students to consider an experimental procedure and then explain in a couple of sentences what methods are going to be used and the rationale for their use. As part of their pre-lab, the Purdue University research team asked students to devise a scientific (‘research’) question that could be answered using the data collected. They then asked students to evaluate and modify their own questions as part of the post-lab, supporting the development of investigative skills. It would be straightforward to incorporate this approach into any practical activity.

Finally, ask students to evaluate a mock response from another student about an aspect of the theory (eg ‘acids react with bases because acids like to donate protons and bases like to accept them’). This elicits critical thinking that can engage every student, with scope to stretch the more able.

These approaches can help students develop a more sophisticated view of chemistry and the higher order skills that will serve them well whatever their future destination.

[1] J-M G Rodriguez and M H Towns, J. Chem. Educ. , 2018, 95 , 2141, DOI: 10.1021/acs . jchemed.8b00683

[2] H Y Agustian and M K Seery, Chem. Educ. Res. Pract., 2017, 18 , 518, DOI: 10.1039/C7RP00140A

J-M G Rodriguez and M H Towns,  J. Chem. Educ. , 2018,  95 , 2141,  DOI: 10.1021/acs . jchemed.8b00683

H Y Agustian and M K Seery,  Chem. Educ. Res. Pract.,  2017,  18 , 518, DOI: 10.1039/C7RP00140A

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Please note you do not have access to teaching notes, the chemistry of critical thinking: the pursuit to do both better.

Improving Classroom Engagement and International Development Programs: International Perspectives on Humanizing Higher Education

ISBN : 978-1-83909-473-6 , eISBN : 978-1-83909-472-9

Publication date: 28 August 2020

This chapter presents a qualitative investigation of lecturers’ perceptions of critical thinking and how this influenced how they taught. All of the participants taught the same first-year university chemistry course. This case study provides insights about how there may need to be fundamental shifts in lecturers’ perceptions about learning and the development of critical thinking skills so that they can enhance knowledge and understanding of chemistry as well as advance the students’ critical thinking. Recommendations are made for professional learning for lecturers and for changing the “chemistry” of the design of learning experiences through valuing critical thinking in assessments and making critical thinking more explicit throughout the course. The authors argue that critical thinking must be treated as a developmental phenomenon.

• Critical thinking
• Teaching strategy
• Teaching activities
• Effective teaching
• Barriers and obstacles

Conner, L. and Kolajo, Y. (2020), "The Chemistry of Critical Thinking: The Pursuit to do Both Better", Sengupta, E. , Blessinger, P. and Makhanya, M. (Ed.) Improving Classroom Engagement and International Development Programs: International Perspectives on Humanizing Higher Education ( Innovations in Higher Education Teaching and Learning, Vol. 27 ), Emerald Publishing Limited, Leeds, pp. 93-110. https://doi.org/10.1108/S2055-364120200000027009

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Bringing the lab outdoors

NMR isn’t a new technology. First discovered in 1938, it’s broadly known for its diagnostic purposes in the medical world. But chemists, like Aztiazarain, employ this magnet-based technology to investigate the molecular underpinnings of organic and inorganic matter.

How it works is fairly straightforward. A sample is placed within an external magnetic field, which causes atomic nuclei to align within the field. If the sample is subjected to electromagnetic radiation at a frequency unique to specific nuclei, the resulting spectrum, which is organized in a graph form with various peaks, generates useful information that correlates to chemical compounds within the sample. The more powerful the magnetic field, the greater the resolution of the data.

“All this stuff is done with high-field magnets and you get really good pictures out of it,” Aztiazarain said. “But we can also do it with low ones as well, but you don’t get as great of a picture, which is understandable.”

Whereas high-field NMR spectra showcase sharp peaks, low-field NMR spectra look like rolling hills, indicating a marked loss in resolution. Aztiazarain and the Augustine Lab are developing a technique to decouple the scrambled signals from different chemical elements in a single sample. The hope is that doing so will improve low-resolution NMR data. The research is iterative but promising for the development of transportable devices for NMR purposes.

Encouraging inquisitive minds in the classroom

Aztiazarain knows firsthand the whirlwind experience transfer students can face when acclimating to the UC Davis campus. He was once in their shoes, and his experience informs his teaching, both as an adjunct professor at Sacramento City College and as a teaching assistant at UC Davis.

“It’s a great way to facilitate transfer students from the community college to the R1 university experience,” Aztiazarain said. “It’s tough to compete against freshmen and sophomores who have already been interacting with a lot of professors and are potentially in a research group.”

Aztiazarain wants to illuminate that pathway from the lecture hall to the research lab. As a teaching assistant of the pivotal course "CHE 125: Advanced Methods in Physical Chemistry," he guides undergraduates through research projects of their own design. During the course, students use the Chemistry Annex Instrumentation Lab, a facility that allows them to analyze chemical compounds in incredibly fine detail.  

“We teach them the techniques that you need to succeed inside a laboratory environment,” said Aztiazarain, noting that he encourages students to challenge themselves with projects that push them into uncharted intellectual waters.

The format harkens back to Aztiazarain’s days as a student in CHE 125. For his project, he and his research group investigated e-cigarette devices. The project involved fabricating a vacuum pump that imitated human inhalation and using scanning electron microscopy to investigate the vape’s heat coil after use. Aztiazarain and his colleagues discovered that prolonged, continuous usage led to the degradation of the vape’s heat coil. What’s more, overheating the coil led to the production of harmful aromatic hydrocarbons.

That research experience, the exploration of a new topic, is exactly what Aztiazarain wants present-day undergraduates to experience.

“We want to encourage that independent thinking,” he said. “One thing that’s evolved in the course is we’ve moved from just doing lab work and partial projects to really the entire research project process and the process of thinking about a research project.”

According to Aztiazarain, former students of CHE 125 often move into industry jobs, where they then ask potential candidates if they’ve taken such a foundational course.

“Many of our former students have edged out competition because they were recognized in this course,” he said. “The potential for networking just from the course has improved - and I’m in touch with a few employers who ask for referrals from the course.  It’s an exciting development that I hope can continue when I pass the reins to the next teaching assistant.”

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30.3: Critical Thinking

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Introduction

Learning objectives.

• define critical thinking
• identify the role that logic plays in critical thinking
• apply critical thinking skills to problem-solving scenarios
• apply critical thinking skills to evaluation of information

Consider these thoughts about the critical thinking process, and how it applies not just to our school lives but also our personal and professional lives.

“Thinking Critically and Creatively”

Critical thinking skills are perhaps the most fundamental skills involved in making judgments and solving problems. You use them every day, and you can continue improving them.

The ability to think critically about a matter—to analyze a question, situation, or problem down to its most basic parts—is what helps us evaluate the accuracy and truthfulness of statements, claims, and information we read and hear. It is the sharp knife that, when honed, separates fact from fiction, honesty from lies, and the accurate from the misleading. We all use this skill to one degree or another almost every day. For example, we use critical thinking every day as we consider the latest consumer products and why one particular product is the best among its peers. Is it a quality product because a celebrity endorses it? Because a lot of other people may have used it? Because it is made by one company versus another? Or perhaps because it is made in one country or another? These are questions representative of critical thinking.

The academic setting demands more of us in terms of critical thinking than everyday life. It demands that we evaluate information and analyze myriad issues. It is the environment where our critical thinking skills can be the difference between success and failure. In this environment we must consider information in an analytical, critical manner. We must ask questions—What is the source of this information? Is this source an expert one and what makes it so? Are there multiple perspectives to consider on an issue? Do multiple sources agree or disagree on an issue? Does quality research substantiate information or opinion? Do I have any personal biases that may affect my consideration of this information?

It is only through purposeful, frequent, intentional questioning such as this that we can sharpen our critical thinking skills and improve as students, learners and researchers.

—Dr. Andrew Robert Baker,  Foundations of Academic Success: Words of Wisdom

Defining Critical Thinking

Thinking comes naturally. You don’t have to make it happen—it just does. But you can make it happen in different ways. For example, you can think positively or negatively. You can think with “heart” and you can think with rational judgment. You can also think strategically and analytically, and mathematically and scientifically. These are a few of multiple ways in which the mind can process thought.

What are some forms of thinking you use? When do you use them, and why?

As a college student, you are tasked with engaging and expanding your thinking skills. One of the most important of these skills is critical thinking. Critical thinking is important because it relates to nearly all tasks, situations, topics, careers, environments, challenges, and opportunities. It’s not restricted to a particular subject area.

Imagine, for example, that you’re reading a history textbook. You wonder who wrote it and why, because you detect certain assumptions in the writing. You find that the author has a limited scope of research focused only on a particular group within a population. In this case, your critical thinking reveals that there are “other sides to the story.”

Who are critical thinkers, and what characteristics do they have in common? Critical thinkers are usually curious and reflective people. They like to explore and probe new areas and seek knowledge, clarification, and new solutions. They ask pertinent questions, evaluate statements and arguments, and they distinguish between facts and opinion. They are also willing to examine their own beliefs, possessing a manner of humility that allows them to admit lack of knowledge or understanding when needed. They are open to changing their mind. Perhaps most of all, they actively enjoy learning, and seeking new knowledge is a lifelong pursuit.

This may well be you!

No matter where you are on the road to being a critical thinker, you can always more fully develop your skills. Doing so will help you develop more balanced arguments, express yourself clearly, read critically, and absorb important information efficiently. Critical thinking skills will help you in any profession or any circumstance of life, from science to art to business to teaching.

Critical Thinking in Action

The following video, from Lawrence Bland, presents the major concepts and benefits of critical thinking.

A YouTube element has been excluded from this version of the text. You can view it online here: http://pb.libretexts.org/ec1/?p=432

Critical Thinking and Logic

Critical thinking is fundamentally a process of questioning information and data. You may question the information you read in a textbook, or you may question what a politician or a professor or a classmate says. You can also question a commonly-held belief or a new idea. With critical thinking, anything and everything is subject to question and examination.

Logic’s Relationship to Critical Thinking

The word logic comes from the Ancient Greek logike , referring to the science or art of reasoning. Using logic, a person evaluates arguments and strives to distinguish between good and bad reasoning, or between truth and falsehood. Using logic, you can evaluate ideas or claims people make, make good decisions, and form sound beliefs about the world. [1]

Questions of Logic in Critical Thinking

Let’s use a simple example of applying logic to a critical-thinking situation. In this hypothetical scenario, a man has a PhD in political science, and he works as a professor at a local college. His wife works at the college, too. They have three young children in the local school system, and their family is well known in the community.

The man is now running for political office. Are his credentials and experience sufficient for entering public office? Will he be effective in the political office? Some voters might believe that his personal life and current job, on the surface, suggest he will do well in the position, and they will vote for him.

In truth, the characteristics described don’t guarantee that the man will do a good job. The information is somewhat irrelevant. What else might you want to know? How about whether the man had already held a political office and done a good job? In this case, we want to ask, How much information is adequate in order to make a decision based on logic instead of assumptions?

The following questions, presented in Figure 1, below, are ones you may apply to formulating a logical, reasoned perspective in the above scenario or any other situation:

• What’s happening? Gather the basic information and begin to think of questions.
• Why is it important? Ask yourself why it’s significant and whether or not you agree.
• What don’t I see? Is there anything important missing?
• How do I know? Ask yourself where the information came from and how it was constructed.
• Who is saying it? What’s the position of the speaker and what is influencing them?
• What else? What if? What other ideas exist and are there other possibilities?

Problem-Solving With Critical Thinking

For most people, a typical day is filled with critical thinking and problem-solving challenges. In fact, critical thinking and problem-solving go hand-in-hand. They both refer to using knowledge, facts, and data to solve problems effectively. But with problem-solving, you are specifically identifying, selecting, and defending your solution. Below are some examples of using critical thinking to problem-solve:

• Your roommate was upset and said some unkind words to you, which put a crimp in your relationship. You try to see through the angry behaviors to determine how you might best support your roommate and help bring your relationship back to a comfortable spot.

• Your final art class project challenges you to conceptualize form in new ways. On the last day of class when students present their projects, you describe the techniques you used to fulfill the assignment. You explain why and how you selected that approach.
• Your math teacher sees that the class is not quite grasping a concept. She uses clever questioning to dispel anxiety and guide you to new understanding of the concept.
• You have a job interview for a position that you feel you are only partially qualified for, although you really want the job and you are excited about the prospects. You analyze how you will explain your skills and experiences in a way to show that you are a good match for the prospective employer.
• You are doing well in college, and most of your college and living expenses are covered. But there are some gaps between what you want and what you feel you can afford. You analyze your income, savings, and budget to better calculate what you will need to stay in college and maintain your desired level of spending.

Problem-Solving Action Checklist

Problem-solving can be an efficient and rewarding process, especially if you are organized and mindful of critical steps and strategies. Remember, too, to assume the attributes of a good critical thinker. If you are curious, reflective, knowledge-seeking, open to change, probing, organized, and ethical, your challenge or problem will be less of a hurdle, and you’ll be in a good position to find intelligent solutions.

Evaluating Information With Critical Thinking

Evaluating information can be one of the most complex tasks you will be faced with in college. But if you utilize the following four strategies, you will be well on your way to success:

• Read for understanding by using text coding
• Examine arguments
• Clarify thinking

1. Read for Understanding Using Text Coding

When you read and take notes, use the text coding strategy . Text coding is a way of tracking your thinking while reading. It entails marking the text and recording what you are thinking either in the margins or perhaps on Post-it notes. As you make connections and ask questions in response to what you read,  you monitor your comprehension and enhance your long-term understanding of the material.

With text coding, mark important arguments and key facts. Indicate where you agree and disagree or have further questions. You don’t necessarily need to read every word, but make sure you understand the concepts or the intentions behind what is written. Feel free to develop your own shorthand style when reading or taking notes. The following are a few options to consider using while coding text.

See more text coding from PBWorks and Collaborative for Teaching and Learning .

2. Examine Arguments

When you examine arguments or claims that an author, speaker, or other source is making, your goal is to identify and examine the hard facts. You can use the spectrum of authority strategy for this purpose. The spectrum of authority strategy assists you in identifying the “hot” end of an argument—feelings, beliefs, cultural influences, and societal influences—and the “cold” end of an argument—scientific influences. The following video explains this strategy.

3. Clarify Thinking

When you use critical thinking to evaluate information, you need to clarify your thinking to yourself and likely to others. Doing this well is mainly a process of asking and answering probing questions, such as the logic questions discussed earlier. Design your questions to fit your needs, but be sure to cover adequate ground. What is the purpose? What question are we trying to answer? What point of view is being expressed? What assumptions are we or others making? What are the facts and data we know, and how do we know them? What are the concepts we’re working with? What are the conclusions, and do they make sense? What are the implications?

4. Cultivate “Habits of Mind”

“Habits of mind” are the personal commitments, values, and standards you have about the principle of good thinking. Consider your intellectual commitments, values, and standards. Do you approach problems with an open mind, a respect for truth, and an inquiring attitude? Some good habits to have when thinking critically are being receptive to having your opinions changed, having respect for others, being independent and not accepting something is true until you’ve had the time to examine the available evidence, being fair-minded, having respect for a reason, having an inquiring mind, not making assumptions, and always, especially, questioning your own conclusions—in other words, developing an intellectual work ethic. Try to work these qualities into your daily life.

https://assessments.lumenlearning.co...sessments/1243

• "logic." Wordnik . n.d. Web. 16 Feb 2016 . ↵
• "Student Success-Thinking Critically In Class and Online."  Critical Thinking Gateway . St Petersburg College, n.d. Web. 16 Feb 2016. ↵
• Outcome: Critical Thinking. Provided by : Lumen Learning. License : CC BY: Attribution
• Self Check: Critical Thinking. Provided by : Lumen Learning. License : CC BY: Attribution
• Foundations of Academic Success. Authored by : Thomas C. Priester, editor. Provided by : Open SUNY Textbooks. Located at : http://textbooks.opensuny.org/foundations-of-academic-success/ . License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• Image of woman thinking. Authored by : Moyan Brenn. Located at : https://flic.kr/p/8YV4K5 . License : CC BY: Attribution
• Critical Thinking. Provided by : Critical and Creative Thinking Program. Located at : http://cct.wikispaces.umb.edu/Critical+Thinking . License : CC BY: Attribution
• Critical Thinking Skills. Authored by : Linda Bruce. Provided by : Lumen Learning. Project : https://courses.lumenlearning.com/lu...inking-skills/ . License : CC BY: Attribution
• Image of critical thinking poster. Authored by : Melissa Robison. Located at : https://flic.kr/p/bwAzyD . License : CC BY: Attribution
• Thinking Critically. Authored by : UBC Learning Commons. Provided by : The University of British Columbia, Vancouver Campus. Located at : http://www.oercommons.org/courses/learning-toolkit-critical-thinking/view . License : CC BY: Attribution
• Critical Thinking 101: Spectrum of Authority. Authored by : UBC Leap. Located at : https://youtu.be/9G5xooMN2_c . License : CC BY: Attribution
• Image of students putting post-its on wall. Authored by : Hector Alejandro. Located at : https://flic.kr/p/7b2Ax2 . License : CC BY: Attribution
• Image of man thinking. Authored by : Chad Santos. Located at : https://flic.kr/p/phLKY . License : CC BY: Attribution
• Critical Thinking.wmv. Authored by : Lawrence Bland. Located at : https://youtu.be/WiSklIGUblo . License : All Rights Reserved . License Terms : Standard YouTube License

‘What does the term Critical Thinking mean to you?’ A qualitative analysis of chemistry undergraduate, teaching staff and employers' views of critical thinking

First published on 13th February 2017

Good critical thinking is important to the development of students and a valued skill in commercial markets and wider society. There has been much discussion regarding the definition of critical thinking and how it is best taught in higher education. This discussion has generally occurred between philosophers, cognitive psychologists and education researchers. This study examined the perceptions around critical thinking of 470 chemistry students from an Australian University, 106 chemistry teaching staff and 43 employers of chemistry graduates. An open-ended questionnaire was administered to these groups, qualitatively analysed and subsequently quantified. When asked to define critical thinking respondents identified themes such as ‘analysis’, ‘critique’, ‘objectivity’, ‘problem solving’, ‘evaluate’ and ‘identification of opportunities and problems’. Student respondents described the smallest number of themes whereas employers described the largest number of themes. When asked where critical thinking was developed during the study of chemistry students overwhelmingly described practical environments and themes around inquiry-based learning. When teaching staff were asked this question they commonly identified critiques, research, projects and practical environments to some extent. This research highlights that there is only limited shared understanding of the definition of critical thinking and where it is developed in the study of chemistry. The findings within this article would be of interest to higher education teaching practitioners of science and chemistry, those interested in development of graduate attributes and higher order cognitive skills (HOCS) and those interested in the student and employer perspectives.

Introduction

As the need for innovation, and anticipating and leading change continues to grow, employers recognise the importance of critical thinking and critical reflection ( Desai et al. , 2016 ). It has become an expectation that graduates are able to demonstrate a range of transferable skills such as critical thinking ( Lowden et al. , 2011 ). In a survey of 400 US employers, 92% of respondents rated critical thinking as ‘important’ or ‘very important’ in an undergraduate degree and the fifth most applied skill in the work place ( Jackson, 2010a ).

A recent study commissioned by the Office of the Chief Scientist of Australia surveyed 1065 employers representing a range of industries ( Prinsley and Baranyai, 2015 ). Over 80% of respondents indicated critical thinking as ‘important’ or ‘very important’ as a skill or attribute in the workplace. Critical thinking was considered the second most important skill or attribute behind active learning. In 2012 Graduate Careers Australia found that of the 45% of chemistry graduates available for full-time or part-time employment, only 66% had obtained employment in a chemistry related field ( Graduate Careers Australia, 2015 ). These findings suggest that skills which may be transferable to a range of employment settings, such as critical thinking, are worthwhile developing at the tertiary level.

The definition of critical thinking

The report concluded that a person who exhibits good critical thinking is in possession of a series of cognitive skills and dispositions. The consensus of the Delphi experts was that a good critical thinker is proficient in the skills of interpretation, analysis, evaluation, inference, explanation and self-regulation ( Facione, 1990 ). Furthermore, the report stated that a good critical thinker demonstrates a series of dispositions which is required for the individual to utilise the aforementioned skills. According to the report a ‘good critical thinker, is habitually disposed to engage in, and to encourage others to engage in, critical judgement’ ( Facione, 1990 , p. 12). These dispositions were later categorised into inquisitiveness, open-mindedness, systematicity, analyticity, truth seeking, critical thinking self-confidence and maturity ( Facione, 1990 ).

Cognitive psychology and education research take a more evidence based approach to defining critical thinking and the skills and dispositions that it encompasses. The term critical thinking itself is often used to describe a set of cognitive skills, strategies or behaviours that increase the likelihood of a desired outcome ( Halpern, 1996 ; Tiruneh et al. , 2014 ). Dressel and Mayhew (1954) suggested it is educationally useful to define critical thinking as the sum of specific behaviours which could be observed from student acts. These critical thinking abilities are identifying central issues, recognising underlying assumptions, evaluating evidence or authority and drawing warranted conclusions.

Psychologists typically explored and defined critical thinking via a series of reasoning schemas; conditional reasoning, statistical reasoning, methodological reasoning and verbal reasoning ( Nisbett et al. , 1987 ; Lehman and Nisbett, 1990 ). Halpern (1993) refined the cognitive psychologists' definition of critical thinking as the thinking required to solve problems, formulate inferences, calculate likelihoods and make decisions. Halpern listed a series of skills and dispositions required for good critical thought. Those skills are verbal reasoning, argument analysis, thinking as hypothesis testing, understanding and applying likelihood, uncertainty and probability, decision making and problem solving ( Halpern, 1998 ). The dispositions Halpern described are a willingness to engage and persist with complex tasks, habitually planning and resisting impulsive actions, flexibility or open-mindedness, a willingness to self-correct and abandon non-productive strategies and an awareness of the social context for thoughts to become actions ( Halpern, 1998 ). Glaser (1984) further elaborated on the awareness of context to suggest that critical thinking requires proficiency in metacognition.

In the case of science education there is often an emphasis of critical thinking as a skill set ( Bailin, 2002 ). There are concerns that from a pedagogical perspective many of the skills or processes commonly ascribed as part of critical thinking are difficult to observe and therefore difficult to assess. Consequently, Bailin suggests that the concept of critical thinking should explicitly focus on adherence to criteria and standards to reflect ‘good’ critical thinking ( Bailin, 2002 , p. 368).

Recent literature has lent evidence to the notion that there are several useful definitions of critical thinking of equally valuable meaning ( Moore, 2013 ). The findings of this work identified themes such as ‘critical thinking: as judgement; as scepticism; as originality; as sensitive reading; or as rationality.’ The emphasis with which these themes were used was dependent on the teaching practitioners' context.

Can critical thinking be taught?

In later years cognitive psychology leant evidence to the argument that critical thinking could be developed within a specific discipline and those reasoning skills were, at least to some degree, transferable to situations encountered in daily life ( Lehman et al. , 1988 ; Lehman and Nisbett, 1990 ). This led to a more pragmatic view that the best critical thinking occurs within ones area of expertise, termed domain specificity ( Ennis, 1990 ), however critical thinking can still be effectively developed with or without content specific knowledge ( McMillan, 1987 ; Ennis, 1989 ). However the debate regarding the dependence of content specific knowledge in the development of critical thinking continues to be discussed ( Moore, 2011 ; Davies, 2013 ).

Attempts to teach critical thinking are common in the chemistry education literature. These range from writing exercises ( Oliver-Hoyo, 2003 ; Martineau and Boisvert, 2011 ; Stephenson and Sadler-Mcknight, 2016 ), inquiry-based projects ( Gupta et al. , 2015 ), flipped lectures ( Flynn, 2011 ) and open-ended practicals ( Klein and Carney, 2014 ) to gamification ( Henderson, 2010 ) and work integrated learning (WIL) ( Edwards et al. , 2015 ). While this literature captures that critical thinking is being developed, it seldom discusses the perception of the students.

This study aimed to identify the perceptions of critical thinking of chemistry students, teaching staff and employers. The study investigated how each of these groups define critical thinking and where students and teaching staff believed critical thinking was developed during the study of chemistry.

Data collection instrument

A similar questionnaire was administered in hard copy to the teaching associates (TAs) and academics within the School of Chemistry at Monash University and via an online format to a different cohort from a range of institutions. The questionnaire consisted of items asking participants to identify teaching activities undertaken within the previous year, and at which year levels they taught these activities. They were asked open-ended questions which aligned with the student questionnaire: ‘What does the term “Critical Thinking” mean to you?’ (Q1) and ‘Can you provide an example of when you have provided students with the opportunity to develop their critical thinking while studying chemistry?’ (Q2b).

Employers were contacted directly via email and provided with a link to an online questionnaire. The questionnaire consisted of four open-ended question: ‘What does the term “Critical Thinking” mean to you?’ (Q1) and three demographic questions regarding which country the participant's organisation was based, which sector their business was in and the highest qualification the participant held.

Student participants

The second year cohort consisted of 359 students from Synthetic Chemistry I, a course focused on organic and inorganic synthetic techniques from practical and theoretical perspectives. This course is a core unit for any student pursing a chemistry major. Participants were provided with the questionnaire at the end of a practical session during the first two weeks of semester one. The practical activity conducted within this time was known to typically only take students three of the four hours allocated to the practical session. As the activity was a compulsory part of the course, and given it was an essential part of the chemistry major, this cohort could be considered a representative random sample of second year chemistry major students.

Finally, the third year cohort was drawn from 84 students studying Advanced Inorganic Chemistry. This course builds on the theoretical knowledge and practical skills developed in Synthetic Chemistry I, focusing specifically on inorganic chemistry. Typically students completing a chemistry major undertook this unit but alternative courses were available. Participants were provided with the questionnaire during practical sessions in the first four weeks of semester and encouraged to complete it during the session. Since the activities in these sessions were very demanding and time was generally scarce for these students the sampling was regarded as convenient. Furthermore as not all chemistry majors may have undertaken Advanced Inorganic Chemistry the data obtained from this cohort may be non-representative.

Teaching staff participants

A senior TAs and academics cohort consisted of academic staff and TAs with several years teaching experience. These academics and senior TAs typically taught chemistry courses other than Chemistry I or Advanced Chemistry I. 12 individuals were approached during semester one of 2015 and were advised to return the questionnaire via unlabelled internal mail.

Finally an online academic cohort consisted of around 300 members of a chemistry education email discussion group predominately from the UK and Europe. These participants received a link to an online version of the questionnaire sent via a third party.

All TAs and academic staff were advised their participation was voluntary and they could opt out by not completing the questionnaire in accordance with MUHREC regulations. All senior TAs, academics and online academics were previously known to highly value the scholarship of teaching thus increasing the likelihood of their participation. Consequently this would be considered a non-representative and convenient sample of experienced teaching staff.

Employer participants

Research theoretical framework.

The data was analysed qualitatively and the next stage involved quantification of that qualitative analysis. The qualitative data was analysed with no prior assumptions regarding the number of ways in which individuals may think about critical thinking. The qualitative analysis was then quantified to identify whether there were any common ways in which individuals experienced critical thinking. The nature of these commonalities was not assumed however a retrospective comparison with the literature informed the inferences drawn from the data.

Data analysis

The questionnaire data for each cohort was imported into Nvivo as seven separate ‘sources’: first year students (A), second year students (B), third year students (C), TAs (D), senior TAs and academics (E), online academics (F) and employers (G). These cohorts were then merged into three major groups. Students, consisting of A, B and C, teaching staff consisting of D, E and F and employers (G).

Six chemistry education researchers working within the Chemistry Education Research Group (CERG) at Monash University were provided a random selection of 10% of all responses to Q1 and Q2a/Q2b. They were asked to identify key words suggesting emergent themes in each question and from these emergent themes ‘codes’ were generated by the primary researcher for participants' responses ( Bryman and Burgess, 1994 ). Having reviewed the data once, the responses were studied in greater detail to determine whether there were any hidden themes which the initial analysis failed to identify. A third review of the emergent themes within each question was conducted and using a redundancy approach similar themes were combined. This resulted in 21 unique themes for Q1 and 19 unique themes for Q2a/Q2b to used in coding all responses.

The data from the emergent themes of each question was then analysed quantitatively. To determine the number of participants within each group describing a specific theme, the total number of responses within each theme per group was determined using Nvivo's ‘Matrix Coding’ function. This data was exported to Microsoft Excel and the number of participants describing a specific theme within each group was then expressed as a percentage. This percentage was determined using the number of responses for a theme within a group divided by the total number of participants who answered a given question from that group. These percentages were then presented graphically.

Table 1 shows the gender distribution and median age of students who chose to provide this data. As can be seen, there is a slightly larger population of male students, by 12%. The median age of students is 19 years old which is the typical age of most first or second year Australian undergraduate university students.

Table 2 shows the teaching activities and year levels taught by the various cohorts within the teaching staff group. Respondents were able to select multiple teaching activities and year levels taught. The TA cohort typically taught first year laboratory sessions whereas senior TAs and academics all taught at various year levels via laboratory, tutorial and lecture activities.

Table 3 provides the demographic data for employers. The respondents' main offices were predominantly found in Australia and the respondents themselves generally had a tertiary level qualification, with 40% of respondents holding a PhD. The most common sector in which respondents worked were chemical, pharmaceutical or petrochemicals (16%). There was also a reasonable representation of respondents from development, innovation or manufacturing (12%), life sciences (14%) and government (12%).

The 21 themes generated in response to the question: ‘What does the term “Critical Thinking” mean to you?’ (Q1) can be found in Table 4 along with a definition and brief quote to illustrate the meaning attributed to these themes. The quantitative analysis found in Fig. 1 describes the frequency with which each of these themes was expressed by students, teaching staff and employers.

It is important to note that a single response may be coded to multiple themes or in some instances none at all. Table 5 provides a breakdown of how many responses contain a given number of themes. For example 87 responses from the first year cohort contain only a single theme whereas 11 responses from employers contain three themes. The mean number of themes per response or coding density was determined for each cohort and each group. Students described a mean value of 1.73 themes per response, teaching staff described an average of 2.75 themes per response and employers described 3.98 themes per response.

In response to the question; ‘Can you provide an example of when you have had the opportunity to develop your critical thinking while studying chemistry?’ (Q2a) or ‘Can you provide an example of when you have provided students with the opportunity to develop their critical thinking while studying chemistry?’ (Q2b) 19 themes were generated. Table 6 contains these themes, their definitions and brief excerpts to convey the meaning attributed to these themes. The quantitative analysis found in Fig. 2 describes the frequency with which each of these themes was expressed in student and teaching staff responses.

Once again a single response could be coded to multiple themes or none at all. Table 7 shows how many responses contained a given number of themes. For example 108 first year responses were coded to a single theme compared to only two Senior TA/Academic responses. Students described an average of 1.32 themes per response and teaching staff described an average of 2.25 themes per response.

Data representation and limitations

A similar pattern of coding density can be observed between TAs (D) versus Senior TAs and Academics (E), Online Academics (F) and Employers (G). It would appear that those participants who were approached directly or online made a concerted effort to respond to the questions as can be seen in Tables 5 and 7 , where at least 3 themes were typically described by cohorts E, F and G. Again it is worth considering the experience that cohort D have with critical thinking. The majority of this cohort were on semester long contracts and only had teaching experience in a first year laboratory environment ( Table 2 ). It is possible these participants may not exercise their critical thinking skills as frequently as academics who routinely engage in activities such as peer reviewing journal submissions which exercise these skills more frequently. This aligns with the constructivist notion that an individual creates their meaning of a given construct from their environment ( Lemanski and Overton, 2011 ) and in this research how the participants believe that construct is applied in their daily lives.

With respect to demographic data, there was a slightly larger representation of students identifying as male compared to female. This was observed in all student cohorts, however it is important to note that there was slightly larger number of female students enrolled in chemistry at Monash University as compared to male students. As can be seen from Table 1 , the median age for students was nineteen years old. This value was skewed slightly as a result of such large numbers of respondents from first and second year cohorts.

Larger samples of first and second year students and first year TAs were obtained due to the environments in which the questionnaire was conducted (namely compulsory laboratory sessions). Aside from the slightly larger number of male student respondents, there can be some confidence that the data obtained is representative of a random sample of the respective cohorts and the findings may be generalizable.

Obtaining data from senior TAs, academics and employers was far more difficult and consequently the data collected was more reflective of non-representative convenience sampling. Therefore, the findings herein may have limited generalisability with respect to senior TAs, academics and employers.

Defining critical thinking

The theme ‘analysis’ was frequently expressed by all groups (students, teaching staff and employers). At least 20% of all responses identified analysis as part of the meaning of critical thinking. In the case of the student group it was, in fact, the most common theme, with just over 25% of respondents using it to define critical thinking. The term analysis or analysing was commonly used to describe interaction with some sort intellectual stimulus, whether it be an idea, data or a problem. Many responses referred to ‘analysing something’ to suggest a breath of critical thinking.

Students strongly identified with three other themes: ‘critique’, ‘objectivity’ and ‘problem solving’. Problem solving was the second most commonly expressed theme by student respondents with just over 23% of responses describing it. The link between critical thinking and problem solving appears to be a common association made by students ( Tapper, 2004 ). Critique and objectivity were identified in approximately 17% of responses. The relatively smaller number of themes described by students is not altogether surprising as other qualitative studies have shown students often have difficultly conceptualising critical thinking ( Duro et al. , 2013 ).

Teaching staff most commonly described the themes ‘critique’ (40%) and ‘evaluate’ (42%) when defining critical thinking. In other recent studies a similar emphasis on interpreting information via analysis and evaluation was also observed ( Duro et al. , 2013 ; Desai et al. , 2016 ). Teaching staff were much more goal orientated than students with 28% of responses describing ‘arriving at an outcome’. Outcomes were very task orientated a kin to Barnett's (1997) ‘critical being’, either developing a plan relating to experimental design or arriving at a conclusion as a result of experimental data. For example:

“The ability to examine evidence, come to a conclusion based on that evidence…”

Teaching staff also commonly described the themes ‘application of knowledge’, ‘logical approach’, ‘objectivity’ and ‘problem solving’ in approximately 20% of responses. It is worth noting that students and teaching staff express the theme of ‘objectivity’ with similar frequencies (18% and 19%, respectively). Of all three groups, teaching staff use the theme of problem solving the least when defining critical thinking (18%). While only 14% of teaching staff respondents described the theme of ‘interpreting information’ the value of this as being part of critical thinking was higher than with the student (11%) and employer (9%) groups.

As can be seen from Table 5 employers typically described the largest number themes in their responses. ‘Problem solving’ was the most common theme expressed by over 44% of employers. Employers were goal orientated much like teaching staff, commonly describing themes of ‘application of knowledge’ (19%), ‘objectivity’ (30%), ‘logical approach’ (21%), ‘evaluate’ (30%) and ‘arriving at an outcome’ (33%). Arriving at an outcome contained a wide breadth of examples in employer responses. However, there was some focus on using evidence to inform a conclusion which would lead to a course of action for the organisation to take:

“…a necessary approach to solving or answering problems, developing a product or process.”

Employers expressed four themes unique to their group: ‘context (macro)’ (12%), ‘creative’ (19%), ‘systematic approach’ (21%) and ‘identification of opportunities and problems’ (35%). The latter focused on the use of critical thinking as a method of uncovering what is not immediately apparent:

“To consider the problem to expose route cause(s) in a rationale and logical manner and apply lateral thinking to seek solutions to the problem.”

The above response also includes in its definition of critical thinking;

“The ability of a person to identify a problem that does not have a readily available or off the shelf solution.”

This is an excellent example of responses identifying creativity in conjunction with the theme of problem identification. The general sentiment of employers was that critical thinking is important to innovation within the organisation and is suggestive of what Jackson (2010b) refers to as ‘Pro-c creativity’ or the creativity associated within a professional environment.

Furthermore, employers were unique in describing critical thinking with the theme of ‘context (macro)’. What this theme references is that employers identified the application of critical thinking on a much broader social scale. For example:

“…understand the implications from an organisational perspective.”

“…collaborating the thoughts and views of others to gain a clearer insight of the real challenge.”

Employers acknowledged that the results of critical thinking can have an impact in commercial and societal contexts. While students and teaching staff have a somewhat more internalised definition of critical thinking, employers appear to have a more social application of critical thinking as seen in some the literature ( Desai et al. , 2016 ).

One of the most interesting features of this data was that the terms ‘judgement’ and ‘inference’, found in the Delphi definition of critical thinking ( Facione, 1990 ), were seldom used by respondents. In fact below are the only two student responses to use the term ‘judgement’:

“Not taking things at face value and giving topics considerable thought and analysis before coming to a conclusion/judgement on it.” – First year respondent

“Analysis of a problem to make a judgement.” – Second year respondent

It is worth noting that a similar minority of respondents used the term ‘opinion’ in their definition of critical thinking;

“Ability to objectively analyse, process and form an opinion of a particular subject.”

And a slightly larger number of respondents used the term ‘conclusion’:

“A skill to understand a thing more clearly and make conclusion.”

When the Delphi report describes core critical thinking skills the terms ‘judgement’ and ‘opinion’ are used somewhat synonymously. Similarly, ‘drawing conclusions’ is explicitly stated as a sub skill of the skill of ‘inference’ ( Facione, 1990 , p. 10). This suggests that a larger number of respondents using ‘opinion’ or ‘conclusion’ may in fact be referencing the terms ‘judgement’ or ‘inference’. However without further probing what respondents mean by ‘conclusion’ or ‘opinion’ this is not a certainty.

There is also very little emphasis around self-regulation or the metacognitive processes typically associated with ‘good’ critical thinking ( Glaser, 1984 ; Bailin, 2002 ). Perhaps this is implied when respondents described the theme of ‘objectivity’:

“Thinking about situations with an open view point and analysing what you're doing.”

What is very clear from this data is the emphasis on problem solving in the definition of critical thinking. This was a very prominent feature of the data from students and employers. With respect to the students this may be due to the perception that scientific facts are unquestionable and the algorithmic problem solving pedagogies commonly employed in science education ( Zielinski, 2004 ; DeWit, 2006 ; Cloonan and Hutchinson, 2011 ). This feature of the data was slightly less common in teaching staff, but it was very prominent with employers. This might be due to the fact that employers are typically adept at reflecting on open-ended problems and identifying any parameters or approximations required ( Randles and Overton, 2015 ). This experience with open-ended problems may also explain the description of the theme of ‘identification of problems and opportunities’ which was somewhat unique to employers.

Interestingly the Delphi report does not consider problem solving an element of critical thinking. Instead it proposes problem solving and critical thinking are ‘closely related forms of higher-order thinking’ ( Facione, 1990 , p. 5). Similarly Halpern suggests that certain behaviours are associated with critical thinking or problem solving but that these higher order cognitive skills are not mutually exclusive ( Halpern, 1996 , pp. 317–363). This cognitive psychology view is more reflective of the data that has emerged from respondents in this study which might otherwise be considered misconceptions with respect to critical thinking.

Regardless of this interpretation, it would be interesting to ask students, teachers and professionals from other disciplines to define critical thinking. It is quite possible that an emphasis on judgement may occur in humanities, commerce or arts and perhaps there would be less use of the theme of problem solving. For example when a group of business academics were asked to describe which critical thinking skills were important to graduates entering the workforce within their discipline, 47% of responses described problem solving and 34% of responses described analysis ( Desai et al. , 2016 ).

The other interesting feature of this data are the points of difference between groups and what these may be attributed to. For example teaching staff emphasised the themes of ‘critique’ and ‘evaluate’. A common aspect of an academics role is to be involved in peer review and academic writing so it is not surprising that these themes arise so frequently. Likewise employers' frequency of themes around identification, innovation and context are reflective of a competitive commercial environment. Given the respondents association between critical thinking and problem solving, these perceptions around evaluation and identifying problems could also be a reflection of behaviours typical of expert open-ended problem solvers ( Randles and Overton, 2015 ). Both employers and teaching staff have a goal oriented definition of critical thinking which may be a product of maturity and/or their exposure to professional environments. Again this may be an example of constructivism ( Lemanski and Overton, 2011 ).

As can be seen in Table 8 , all groups used themes around analysis, critiquing, objectivity and problem solving to define critical thinking. In addition teaching staff and employers use themes relating to the application of knowledge, arriving at an outcome, evaluation and using a logical approach. Employers further expand on their definition to include themes regarding creativity, considering the broader context, taking a systematic approach and identifying opportunities and problems. These themes regarding the definition of critical thinking can be synthesised thus:

To analyse and critique objectively when solving a problem . – Students

To analyse, critique and evaluate through the logical and objective application of knowledge to arrive at an outcome when solving a problem . – Teaching staff

To analyse, critique and evaluate problems and opportunities through the logical, systematic, objective and creative application of knowledge so as to arrive at an outcome and recognise the large scale context in which these problems and opportunities occur . – Employers

While there are some similarities between the definitions of critical thinking it would be inaccurate to suggest that there is a shared definition. Furthermore, the depth to which critical thinking was defined appears to reflect the constructivist phenomena. Employers most commonly reflect definitions found in the literature ( Facione, 1990 ; Halpern, 1996 ; Tiruneh et al. , 2014 ). Employers appear to have a broader definition of critical thinking and this may be related to the fact that employers work in very broad contexts and a range of experiences, going beyond chemistry to deal with issues such as budgets, policies and human resources.

Where is critical thinking developed while studying chemistry at university?

With respect to the teaching staff, the wording of the question they received must be considered to put the responses in context: ‘Can you provide an example of when you have provided students with the opportunity to develop their critical thinking while studying chemistry?’ (Q2b) This wording elicited responses which were drawn from the respondents' recent teaching activities and may actually differ from where the respondent believes students develop their critical thinking most. For example many TAs from cohort A only have practical experience to draw on whereas cohorts B and C also have lecture and/or tutorial actives to base their response on ( Table 2 ). Conversely some respondents from cohorts B and C only had lecture or tutorial experience to draw on.

When asked to provide an example of where they believed they developed their critical thinking while studying chemistry, 45% of students identified an activity relating to a practical environment. The second most common theme was ‘inquiry based learning’ (17%). What was most interesting was that 36% of second year students and 14% of third year students specifically mentioned ‘IDEA pracs’. These practicals were guided inquiry activities the students performed as part of their first year laboratory program ( Rayner et al. , 2013 ). The fact that after two years in some cases students identified these activities demonstrates the effectiveness of inquiry-based learning in developing transferable skills such as critical thinking.

It is important to recognise that students do not identify activities that make the teaching of critical thinking explicit. Students in other studies identified courses around scientific communication as opportunities where critical thinking was explicitly taught ( Tapper, 2004 ). Beyond these courses, much like the students in the current study, the development of critical thinking became more implicit and students became dependent on feedback from writing activities ( Tapper, 2004 ; Duro et al. , 2013 ). It is clear from the literature, without a deliberate effort to make critical thinking goals explicit in discipline specific courses, students find it difficult to conceptualise, and perceive critical thinking as an intuitive skill that develops over time ( Tapper, 2004 ; Beachboard and Beachboard, 2010 ; Duro et al. , 2013 ; Loes et al. , 2015 ).

Teaching staff also identified practical environments (26%) as to when they developed students' critical thinking. However, four additional themes were also prominent in their responses: ‘application of knowledge’ (21%), ‘critique’ (33%), ‘project work’ (21%) and ‘research’ (19%). These themes are reflective of activities described in recent literature designed to elicit higher order cognitive skills ( Cowden and Santiago, 2016 ; Stephenson and Sadler-Mcknight, 2016 ; Toledo and Dubas, 2016 ). Critique activities ranged from critiquing experimental design to writing literature reviews:

“I may provide students with some experimental evidence and they need to evaluate whether these are consistent with specific mechanisms.”

“Choosing and researching a topic to conduct a literature review on. Writing a review to include critical appraisal of the information covered.”

“Research paper-based assessments in which students are asked to locate and extract information, analyse data and critically assess aspects of experimental design.”

“…paper analysis which requires use of many variables in understanding change factors and outcomes in reaction.”

The ‘application of knowledge’ most often described activities taking place predominantly in a lecture environment and in some instances in a practical environment. Themes of ‘project work’ and ‘research’ often described activities in practical environments. Many of these responses focus on final year research projects:

“Mainly this comes from the crucial role of the research project, generally in the final year of study when the student has had the opportunity to build up their knowledge base across a broad range of chemistry.”

The above statement would suggest that critical thinking can only be achieved with a solid foundation of discipline specific knowledge. While it holds true that an individual is a better critical thinker within their discipline specific knowledge ( McPeak, 1981 ; Moore, 2011 ) it is not true that a large body knowledge is a necessary prerequisite to develop critical thinking ( Ennis, 1989 ; Davies, 2013 ).

According to this data students and teaching staff have some limited agreement that critical thinking is developed in a practical environment. However, that is where the similarities end. Despite teaching staff believing that they develop critical thinking through the application of knowledge this is not apparent to the students.

Implications for practice

Teaching staff commonly acknowledge that students develop their critical thinking in active environments in accordance with the literature ( Biggs, 2012 ). However the research projects the respondents commonly describe are often elective subjects or offered as vacation internships, the numbers of which are limited and will only become scarcer as student numbers continue to grow. It would be useful to determine if teaching staff believed project work is an opportunity to measure student critical thinking or whether it is better measured via other activities (if at all) and compare this to the literature ( Desai et al. , 2016 ).

A recent meta-analysis would suggest, a combination of teaching activities afford the greatest effect with respect to the development of critical thinking ( Abrami et al. , 2015 ). These teaching activities according to Abrami and colleagues are described as ‘authentic instruction’, ‘dialogue’ and ‘mentoring’. These findings are reflective of the present work where practical inquiry based learning, discussions and research projects were commonly described as opportunities to develop critical thinking. It is advisable for chemistry educators wishing to develop critical thinking in students that the activities described by students and teaching staff within this research form a foundation within their practice, emphasising authentic problem solving and Socratic dialogue ( Abrami et al. , 2015 ).

Future work

When asked to define critical thinking via an open ended questionnaire students, teaching staff and employers all described the themes of analysis, critique, objectivity and problem solving. Teaching staff and employers commonly expressed themes around evaluation, goal orientation and use of logic. Employers also believed creativity, larger scale contexts, taking a systematic approach and identifying of opportunities and problems are important aspects of critical thinking. This would suggest there is only a limited shared definition of critical thinking between students, teaching staff and employers which centres on analysis and problem solving.

In the same open ended questionnaire students and teaching staff described where they believed they developed student critical thinking. Overwhelmingly students described practical environments and inquiry based learning activities developed critical thinking. Teaching staff expressed themes around the application and critiquing of knowledge and to some extent practical environments and research projects. Again there appeared to be limited overlap between the perceptions of students and teaching staff and the need for more immersive student experiences, such as inquiry-based learning and work integrated learning ( Edwards et al. , 2015 ), is apparent in the development of transferable skills such as critical thinking.

If the workplace is expecting tertiary institutes to provide chemistry graduates for the workforce, a shared definition of critical thinking is imperative. However, there appears to be a somewhat limited shared understanding as to what critical thinking skills entail. If there are so many facets to critical thinking how can universities accommodate the development of these? Initiatives such work integrated learning ( Edwards et al. , 2015 ) aim to give students experience in commercial environments and perhaps in combination with inquiry-based pedagogies, a shared understanding of critical thinking and how to develop it can occur.

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Introductory Chemistry: Concepts and Critical Thinking 8th Edition, Kindle Edition

Integrated features, technology, and a reader-friendly voice inspire curiosity around chemistry

With a renewed focus on critical thinking, conceptual engagement, and problem solving, this 8th Edition of the popular Introductory Chemistry: Concepts and Critical Thinking has been thoroughly revised to better engage today’s readers, while equipping them with skills they need to succeed beyond introductory chemistry. Unique among introductory chemistry texts, this text and all of its supporting materials are written by sole author Chuck Corwin. His experience and passion guide readers as they build confidence through innovative pedagogy, technology, and features designed to appeal to contemporary readers. By presenting chemistry in a clear and interesting way, readers leave their first chemistry course with a positive impression and the desire to learn more.

The 8th Edition has been updated and modernized with new, relevant examples, new features, and a revised design. Continuing with Introductory Chemistry: Concepts and Critical Thinking ’s reader-friendly approach, Chuck added features such as A Closer Look to provide insights and offer examples of misconceptions, Helpful Hints to provide coaching where readers struggle most, and new chapter openers tied to elements in the periodic table to show readers the connections all around them.

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Charles H. Corwin has spent over 30 years teaching chemistry to over 12,000 students. He has taught general chemistry, organic chemistry, and quantitative analysis, but has focused primarily on introductory chemistry for the personal rewards it offers.

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Developing students’ critical thinking skills in chemistry through an environmental education experience using STEM-project-based learning

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Ali Musahal , Yuli Rahmawati , Agung Purwanto , Alin Mardiah; Developing students’ critical thinking skills in chemistry through an environmental education experience using STEM-project-based learning. AIP Conf. Proc. 12 January 2024; 2982 (1): 040009. https://doi.org/10.1063/5.0184953

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The aim of this study is to develop chemistry students’ critical thinking skills using a STEM-Project-Based-Learning (STEM-PjBL) practice. Students developed soap and detergent waste treatment equipment to solve an environmental problem related to acid-base chemistry topics. Twenty-five grade 11 students at an Islamic boarding school in Banten Province, Indonesia, participated in this study. Qualitative methodology was used to gather data from a variety of sources such as classroom observation, interviews, reflective journals, and a critical thinking skills test. An analysis of students' critical thinking skills referred to the following five indicators: identify the question at issue, conceptual understanding, idea connections, assumptions, and inferences with five achievement levels. The study revealed that students reached a mastering and competent level, indicated by their ability to: ask questions and respond critically to a problem presented, use proper and adequate understanding of chemistry concepts, make connections between the issues encountered and the concepts studied; test assumptions accompanied by evidence; and deliver clear and logical conclusions. Therefore, the STEM-PjBL model can be considered an effective way for students to develop their critical thinking skills in chemistry and to support their active involvement in environmental education.

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hUMNs of Chemistry #13

Gwen Bailey 

Sher/her Assistant Professor

Tell us about your journey to the University of Minnesota.

I became fascinated with synthetic chemistry as an intern at Tekmira Pharmaceuticals (now Arbutus Biopharm) in Burnaby, BC. It struck me as so powerful that humans could manipulate matter in order to make and break bonds and create compounds with new chemical compositions and properties. Later in third-year inorganic chemistry class, I became fascinated with the chemistry of metals, and the rest of my career has been devoted to pursuing this passion. Like many others in my discipline, I was motivated by the desire to learn and develop new knowledge by carrying out experimental research. I was also passionate about sustainability and soon realized that I could use my knowledge of inorganic chemistry to contribute to more sustainable synthesis and energy solutions. My excitement for this topic is what drove me to pursue a Ph.D. at the University of Ottawa (fun fact: Canada's only officially bilingual institution!) and then a postdoc at Caltech. 

We would love to hear more about your research! What do you hope to accomplish with this work? What is the real-world impact for the average person?

Our research is focused on development of atomically precise nanocluster systems that mimic the structure and reactivity of heterogeneous electrocatalysts. By preparing these discrete compounds and evaluating them in solution environments, we can precisely pinpoint important mechanistic information including the site of substrate binding, delocalization of charge, and the dynamic reconfiguration of bonds that leads to substrate turnover. Our cluster systems not only capture the capabilities of heterogeneous electrocatalysts in a discrete model but they go one step beyond these capabilities in that they have a high density of active sites and are precisely tunable in their steric environment and electronic structure according to well-defined structure-property relationships. Overall, we hope to develop new approaches to catalysis using our atomically precise nanocluster systems and ultimately contribute solutions to solve climate change, for example by developing methods for synthesizing commodity chemicals on large scale using abundant feedstocks (like CO2) and renewable electricity. 

What courses do you teach? What can students expect to get out of your course?

I teach advanced inorganic chemistry classes (CHEM 4745/8745 and 4715/8715) and introductory general chemistry (CHEM 1061). I love talking to students and drawing them into deep conversations about the properties and study of matter! I believe that education is accessible to anyone with a good work ethic and growth mindset, and my teaching style reflects this philosophy. Activities in my classes are split between short, interactive lectures and small-group activities where students go deep with the material through problem-solving and discussion. Students in my classes can expect to be challenged intellectually and ultimately rewarded with new ways of thinking about challenging scientific concepts. 

What do you hope to contribute to the chemistry community at the University?

Beyond the science, I hope to reflect that chemistry is something that is accessible and practicable for all, and that teamwork and mentorship are integral to the practice. Also, I hope to provide opportunities for students to grow their personal, interpersonal, and scientific abilities through the practice of science and through participation in conferences and other programming. 

What do you do outside of the classroom/lab/office for fun?

I am pretty much obsessed with training my body for better health and longevity. I have enjoyed reading books such as "Outlive" by Peter Attia that have focused my efforts in these areas. My current exercise program includes regular zone 2 training (cycling/walking), interval training, strength training, and (mostly for fun) bouldering. 

John Beumer

Senior Designer, Center for Sustainable Polymers

Please give a brief description of your role within the UMN Chemistry department.

I am the Senior Designer for the Center For Sustainable Polymers. My day-to-day tasks include creating artwork for publication, managing the website, and leading our monthly research meetings. 

Before coming to the University of Minnesota I was a design consultant for Pentair and Bright Health in the Twin Cities. In addition, I spent a fair amount of time in the nonprofit world leading marketing and communications efforts. 

What’s your favorite piece of chemistry/science pop culture media? Why do you love it?

I remember visiting the Bell Museum for a CSP Annual Meeting years ago and we got to see closeup images of the Mars surface in their Planetarium. It is so special to live in a time when we get to see images from another planet. And I am equally excited to see what the Mars Perseverance rover returns to us in 2033.

Where is your favorite spot in the Twin Cities?

The Prospect Park Water Tower is a favorite spot. It is currently in the process of renovation but my guess is that they will have limited access to the tower again in a couple of years. It is a great place to get a birds eye view of Minneapolis. 

Emily Robinson

She/her Graduate Student, Buhlmann Group

I am a Minnesotan, born and raised! I went to college and got my chemistry degree at the University of Minnesota Morris, which is part of the U system but out in the middle of western Minnesota, in 2020. I also studied for a semester at the University of Limerick in Ireland for a semester studying chemical nanotechnology. I applied for graduate school all over the US but UMN was one of the few schools felt I could thrive in. I loved the atmosphere and people I met.

We would love to hear more about your research interests! What do you hope to accomplish with this work? What is the real-world impact for the average person?

I work on the development of ion-selective electrodes. Ion detection is vital for medical analysis, environmental monitoring, and industrial applications. think of ions such as chloride and potassium, for medical purposes such as to assess kidney function, and nitrate and arsenate, common environmental pollutants. While there is equipment that can detect there ions, many of them are costly, require complex instrumentation with trained professionals, and are not time-efficient. Ion-selective electrodes (ISEs) are my are an great alternative, they have high selectivity, sensitivity, and versatility. They also overcome the limits that many other instruments have, being relatively small, easy to handle, and give fast response times. These factors are critical for point of care, for rapid test results, and for deployable, wearable, and implantable devices. For these applications, sensors not only need to be dependable for short periods but for days or even years. That is why I have pushed the boundaries of ISE systems to develop exceedingly stable sensing and reference electrodes that can be used to meet the needs of the medical, environmental, and industrial fields today.

Are you involved in any student groups? What inspired you to get involved?

I am currently the co-president for the Joint Safety Team! I have always been a big proponent of lab safety culture and when the opportunity came up, I thought why not? I have been able to work with other lab safety teams throughout the US and we recently submitted a paper on LSO programs as well as were accepted to host a symposium at ACS fall on lab safety culture. Lab safety is something that affects everyone, whether it be on big or small scales, and I am very happy to have been able to be a part of that here.

We keep a garden on our patio that I (try to) help take care of and I am always down for an easy hike in the fall.

Black Coffee & Waffle Bar

Tell us about who makes up your household (including pets).

Our household is myself, my partner Zach who does cancer research at UMN, and our adorable grey tuxedo cat Beatrice

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