In Systems Biology 200, a graduate level class with some undergraduates enrolled, one of the skills that students learn is how to simulate molecular processes in biology by writing monte carle simulations (the Doob-Gillespie algorithm).
Graduate students in Anne Shreffler's seminar, "The Fromm Foundation and Contemporary Music in the United States," collaborate during the semester to produce an exhibition in the Loeb Music Library entitled, Composing the Future: The Fromm Foundation and the Music of Our Time.
In Hazel Pearson's sophomore tutorial for Linguistics, each student writes a summary of the material covered in a single week of the course. The instructor reviews the summary for edits/clarifications and then posts it to the course website.
In Robin Kelsey's gen ed, "Seeing is Believing: A History of Photography," students complete a final project by producing multiple photographs that engaged the history of photography in an inquisitive and meaningful way.
In his Freshman Seminar, Professor John Dowling assigned both basic textbook readings and supplementary readings. Since students were to lead the discussion of the supplementary readings, John ensured that they would have something to say by assigning weekly 1 page "thought essays" that required students to draw on ideas from the readings.
In Economics 970: Household and Consumer Finance, Robert Turley assigned his student "just in time" response papers, which were due 30 minutes before class, soon enough so that students were primed for class at the start of the session.