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.)

It depends on the class. I NEVER have students memorize formulas or definitions. Sometimes they are allowed to bring one page of notes, sometimes they can use study questions that are used to guide their reading of the textbook. Knowing they can use these study questions on tests motivates students to answer them, which helps draw their attention to the important ideas in the textbook. The only restrictions are either page length (one page both sides, standard paper size) or type (study question sheets I've passed out).