Partially Ordered Thoughts

Last week, on a beautiful Friday afternoon before Spring Break, I was teaching my applied combinatorics students about generating functions. We’ll see some of the more powerful things next week, but last week we were focused on the number of integer solutions to an equation in a small number of variables. This is a recurring problem in our class: first we saw it with binomial coefficients, then we saw it with inclusion-exclusion, and now we’re seeing it with generating functions. To make the material less abstract, we were discussing the question in terms of fruit baskets. (You want to make a fruit basket with apples, oranges, bananas, and peaches in it. The number of apples must be even, there must be at least two oranges, there can be no more than six bananas, etc.) Read more »

I firmly believe that for effective teaching and learning in a class, you need two-way feedback. That means that not only do I give the students feedback, but they also get to give me feedback. Georgia Tech, like most places, have a standardized end-of-term course survey. However, I want to be able to fix things on the fly. To do this, I implement a quick midterm survey through our course management system. I provide a modest incentive to the students to take the anonymous survey (free credit for a reading assignment or three clicker questions), and this time I got a phenomenal response rate. (The survey really is anonymous since our course management system can record a score in the gradebook for taking the survey without attaching a name to the responses.) Read more »