Was gearing up for my heat transfer class, reviewing diffEq, and found something you guys might just find useful.

Diff Eq Study Notes/Review Sheets (3 MB PDF)

These would be suitable as supplemental class notes or as a refresher session.

Edit: This site at http://tutorial.math.lamar.edu has similar study notes for College Algebra on up through PDE, including Linear Algebra and (maybe?) Statistics.