Wednesday, September 7, 2011
What is a Bridgehead Carbon anyway?
What is a Bridgehead Carbon anyway? I teach undergraduate chemistry and my main area of interest is Organic Chemistry. I chose the name "Bridgehead Carbons" partly because I have always liked the look of bicyclic compounds like norbornane. You can think of Norbornane as being a cyclohexane (in pink) with a CH2 unit (in black)that acts as a bridge connecting the top and the bottom of the pink ring. The carbons that connect the "main ring" to the "bridge" are the Bridgehead Carbons.
Another reason for choosing this name is that Bridgehead Carbons serve to connect different rings within the same molecule, and I intend to write about a variety of topics that I none the less feel are connected to my experience with chemistry and teaching.
So, what is this blog all about? Stuff that interests me as a chemistry teacher, especially organic and bio-organic chemistry, cheminformatics, things that might be helpful to college students in general, and anything else that strikes my fancy.
Wednesday, January 28, 2009
Monastic Musings: How can I be failing? - Unskilled and Unaware of It
I noticed a surprising phenomenon last semester. Several first-year college students were getting consistently low scores on chapter quizzes - and they did not seem the least bit bothered or concerned about it. They were similarly unperturbed about scores below 60% on the first exam. When they received their mid-semester grade report, though, two of them came to see me, astounded to get such low grades. Their surprise was, of course, surprising to me: how could they possibly think that they were doing well when their quiz and exam scores were in the 50% to 60% range? They claimed that they were unaware that they were doing so poorly, and were somewhat angry that I had not "told them sooner."
We propose that those with limited knowledge in adomain suffer a dual burden: Not only do they reach mistakenconclusions and make regrettable errors, but their incompetencerobs them of the ability to realize it.
Monday, November 10, 2008
Ask Questions - Stepcase Lifehack
Sunday, September 7, 2008
Start of School
We're two weeks into the semester now and things are starting to settle into place again. With the start of a new year there have been a bunch of changes, and of course not everything went smoothly.
First off, I have decided to try something new with my Organic Chemistry class. Lately I have been concerned that despite my best efforts, my students were not getting the most out of my lectures or the readings in the text. Using some student activities during lecture is something I have tried in the past, but I always drifted back to straight lecture. Over the summer I got two presents in my mail box:
not one, but two copies of Organic Chemistry: A Guided Inquiry, which uses a POGIL approach
a booklet on Using Pogil in the Classroom and Other Research Developments from last November's meeting of the Michigan College Chemistry Teachers Association
This seemed like too good an opportunity to miss. As a result, I am replacing my standard lecture format with POGIL. POGIL stands for Process-Oriented Guided Inquiry Learning and involves the students working in groups during class time, with me monitoring and guiding the groups when they have difficulties. The text is really more of a workbook which the students use during class that guides them through the process of learning each lesson. They need to have the book with them every day in class.
It is still a little early for me to tell, but the students seem to be adjusting – some better than others, but that is only to be expected. Of course, the students turned out to be the least of my problems in adopting POGIL. The second edition of Organic Chemistry: A Guided Inquiry, the POGIL text I am using, came out over the summer. When I went to our bookstore manager in July to ask about switching texts he told me there wouldn't be a problem and we should have the books before class started. Ha!
As it turns out, the publisher was out of stock and didn't expect more until Sept 5 – two weeks into the semester. This is at minimum a nuisance, but if the students NEED to have the book with them in class every day to do the lessons it makes it difficult to stick to a schedule. My bookstore manager was very helpful, he was able to get the first few sections of the book copied for me by the first day of class – so we were covered with about two weeks worth of class activities. The author, Andrei Straumanis, has a pretty active listserve on using his book and the POGIL system. He got permission to post pdf's of the first few weeks worth of the book on his web site.
Friday the bookstore called to say the books were in. Hurray!

