While "understanding" a concept is always more desirable than straight memorization, occasionally students need to drill a concept to own it, and that means flashcards! There are a number of great web-based flash card sites out there, but one I like is "
FlashCardExchange". This site allows you to create 2 or 3 sided (ie giving hints) cards that you can access from anywhere. There is even a link to an iPhone app that works in conjunction with the site. Whether it's French verbs, or abbreviations for the periodic table, sometimes all you need is a good set of cards. (Teachers can create sets and then have the students use them.)
