External Aids Do you allow students to use any external reference aids on exams? (For example, open book, open notes, student supplied note pages or formulas, instructor supplied note pages.)

For instructor supplied aids, please describe. For any student supplied aids, what restrictions do you enforce? (For example, number of pages, content such as not allowing worked out examples, authorship such as personally generated vs. photocopied.)

I typically provide students with a set of formulas. I have also experimented with open-book exams and notes pages. I'm not sure I see a strong advantage with any of these approaches right now. My main concern is that students realize that they are not responsible for memorizing formulas, but instead need to be concerned with applying the formulas, choosing the correct formula in a particular situation, and interpreting and explaining their results.