Archive for the ‘Chemical Education Roundups’ Category
Chemical Education Roundup, 4-23-13
“It was the best of times; it was the worst of times.” This sentiment nicely sums up the state of chemical education right now. While sequestration threatens the largest sources of funding for chemical education researchers in the US, the literature has been on fire in the past few weeks with some intriguing studies. There’s a lot to talk about, so let’s get right into it!
First, the bad news. STEM education takes a painful hit in the President’s budget for FY 2014.
The single biggest consolidation proposed this year is in the area of science, technology, engineering, and mathematics (STEM) education, where the Administration is proposing a bold restructuring of STEM education programs—consolidating 90 programs and realigning ongoing STEM education activities to improve the delivery, impact, and visibility of these efforts.
Don’t be fooled by the rhetoric–this is almost certainly bad news for American chem ed researchers. It will be interesting to see how existing NSF-funded programs respond to these changes, but it’s almost certain to hurt the proliferation of new programs. It’s worth noting also that this is only a proposed budget, but if President Obama is throwing STEM education under the bus, I don’t see Congress fighting back.
Enough with the bad news! The bright side is that a lot of interesting research is happening these days. I’ve been digging into the general chemistry literature lately for professional reasons, and a very recent study out of Middle Tennessee State University caught my eye. The research addressed student conceptions of gases, focusing on a question that asks about the effects of a temperature change on the particulate nature of helium gas (originally studied by Nurrenben and Pickering). The conclusion of the research is typical: scaffolding and schema-activating designs for assessments improve performance on conceptual problems relative to more vague designs, but the authors were unable to track down the exact source of the performance boost (despite a few controls).
One clue is provided by another recent study: that of Behmke and Atwood on the implementation of problems sensitive to cognitive load theory in an electronic homework system. The authors converted single, multi-step problems into sequences of related problems that “fade” from nearly complete when given to fully incomplete. Using an analytical approach based on item response theory, the authors observed that students exposed to the “statically fading” questions were very likely to perform better on subsequent related problems. The act of breaking a multi-step problem down and exposing its process over multiple problems can improve performance.
Jennifer Lewis and colleagues at USF have written a very important summary of the state of the art in psychometric measurement for chemistry education research. In addition to pointing out the typical methods researchers use to argue for the validity and reliability of survey results, Lewis et al. note that chemistry education research is becoming more interdisciplinary as evidence mounts for theoretical overlap between sub-fields of science education. They also draw attention to the need for qualitative research to complement quantitative efforts (see the MTSU study for a nice recent example of this idea). A nice read right after Lewis’s review is Barbera’s recent psychometric analysis of the Chemical Concepts Inventory.
In other news: a simple approach to assessing general chemistry laboratories; an investigation of apprenticeship in research groups; differential item functioning in science assessments; the evolution of online video in an organic chemistry course; teaching gas laws to blind students. Mouse over the links for full article titles!
Chemical Education Roundup, 2-9-13
What’s new in the world of chemical education in 2013? In this edition of the CE Roundup, I’ll engage in a bit of shameless self-promotion, and we’ll look at articles that shed new light on the costs of publishing, innovations in laboratory instruction, student evaluations, and more.
Let’s get the shameless self-promotion out of the way first. Two weeks ago, the Introductory Organic Chemistry MOOC (massive open online course) kicked off on Coursera. The materials for this course were prepared by myself and my colleagues at UIUC for use with our organic chemistry 1 course for non-majors. I’m leading the Intermediate Organic Chemistry (organic chemistry 2) effort, and although that class hasn’t started yet, I’ve been knee deep in the MOOC world for a while now. I’ve got a whole series of blog posts planned on the MOOC experience, so stay tuned!
What is it about the winter months and great literature articles? Perhaps the cold bores people into writing. Who knows? Either way, the literature’s been very interesting in early 2013.
First, teacher reflection and cognition in the classroom. Reflective teachers generally see better student evaluations than unreflective ones. No surprise there: drivers who actually watch the road are better than those who don’t! But how much reflection is enough? A recent study in Brit. J. Educ. Technol. sheds some light on the question. The authors found that formative (weekly) student evaluations increased teachers’ reflective practice, and that increased levels of the latter lead to higher student evaluations over a multi-year period. Some would say that formative student evaluations could promote a “consumer culture” in education, however. There’s an interesting debate brewing there. In a study focused on science teachers, a team of researchers writing in to J. Res. Sci. Teach. found that teachers’ “noticing patterns”—patterns in their attention during class—indicate the ways in which they frame the classroom. Particular noticing patterns point to particular frames. Furthermore, the authors add, a given teacher is capable of multiple frames, depending on the classroom’s context. Their theoretical ideas are elegantly demonstrated in a video-based study of a high school biology teacher in action.
Laboratory instruction came under the qualitative microscope this month in a report by Bretz, Towns, and co-workers. They studied how instructors of different laboratories prioritize cognitive (thinking), affective (feeling), and psychomotor (doing) learning goals. This work draws attention to a potentially concerning decline in affective learning goals as students move from general chemistry to organic chemistry. In other laboratory news, a simple apparatus for flash chromatography gives results comparable to traditional columns and “obviates the need for students to handle silica gel”, and instructors at South Dakota State University have reported on instructional design for a laboratory sequence aimed at producing student researchers.
The editor-in-chief of J. Chem. Educ. has written an editorial describing the costs of publishing, and rationalizing some recent price increases. It’s worth a look, particularly if you’re interested in the broader forces acting on academic journals these days. Also interesting are the editorials citations, which include familiar language from the journal’s past editors.
Other news: a really nice piece on learning progressions in Science; a perspective on the scale of acidity; development and evaluation of a chemoinformatics curriculum.
Chemical Education Roundup, 12-11-12
As the weather has turned cold (or not), what’s new in the chemical education world? A number of interesting articles have been published this fall. Bruce Albert’s editorial in Science about the damaging effects of shallow learning in science education is a good place to start—using a personal anecdote about his grandson’s biology textbook, Alberts laments the “breadth not depth” approach to content you see across all levels of science education.
Close to my own heart, Marc Loudon and Laurie Parker have published an interesting study of online homework in an organic chemistry course, concluding that studying textbook problems in addition to solving online homework problems provided no benefits to learning versus solving online homework problems alone. From their abstract: “We speculate that this is because the immediate feedback given by the online system more effectively reinforces the topics.” In other educational technology news, Churchill has written recently about design considerations for learning objects that promote exploration and learning of concepts, conceptual model learning objects. Using data from several different studies, he recommends a minimalist design paradigm: design for a small screen, use a single font, avoid audio/video unless they’re the only option, don’t use too many different colors, etc. Structurally, he advocates the logical use of frames to divide up screen space. Another theoretical study using a “Nature of Technology” approach provides design pointers based on philosophical and cultural ideas.
MOOCs continue to dominate the “popular education” scene, although formal studies on MOOCs haven’t yet emerged—look for that to change in the next six months.
In science writing and inquiry news, a study of argumentation in general chemistry laboratory reports has recently been published. Students used the Science Writing Heuristic approach, and the researchers deconstructed students’ arguments to identify their most important elements for performance. Scientific inquiry itself came under the data-mining microscope in a recent Int. J. Sci. Educ. article, which used cluster analysis to examine types of scientific inquiry in a collection of scientific studies.
Other highlights: a fascinating look at physics teachers’ emotions while implementing inquiry-based activities, a learning progression for energy, the importance of speaking up for learning in an active learning classroom, and an item-reponse-theoretical treatment of an international science/math skills assessment.
Chemical Education Roundup, 7-22-12
Has it really been almost a year since I last published a roundup? Wow. I confess that I’ve been putting much more effort recently into another project, The Organometallic Reader. With BCCE 2012 coming on soon, it seems an appropriate time to start the roundup train going again. I can’t make it to BCCE this year, unfortunately, but the e-program looks fascinating. Follow my man Jeff Raker on Twitter for nods to talks he finds interesting.
So what’s new in the world of chemical education research? What are the cool jams? What is everybody up to? Here are some of my favorite papers over the past year, in no particular order.
On the theoretical side, all organic chemists should check out the hybrid orbital controversy that erupted in the pages of J. Chem. Educ. earlier this year. At issue is whether hybrid orbitals are “real” and whether they should be taught to general and organic chemistry undergraduates. Rebuttals to the original paper brilliantly come to the defense of hybrid orbitals. As an educator, I feel more confident teaching and discussing hybrid orbitals with students after reading this series.
I’ve been waiting on this one for a while: in April, Grove & Cooper’s article on representational competence while drawing organic reaction mechanisms was finally published. Although the papers’ results left me wanting more, the authors’ conclusions will resonate with any organic chemistry teacher. They found that many students avoid using mechanistic approaches to solving organic chemistry problems when mechanisms are not the direct goal, as in “predict-the-product” questions. However, among students who did draw mechanisms, a disturbing trend emerged: the proportion of students who drew nonsensical mechanisms containing cyclic electron flow actually increased with time! On the positive side, the most notable trend over time is a decrease in “nucleophile-attacks-nucleophile” and “electrophile-attacks-electrophile” mechanisms. Still, the (understandable) disrespect that students develop for physically correct mechanisms over time is staggering. Organic chemical educators must be relentless! Read the rest of this entry »
