StudyBlue has been recognized as a 2012 Best Website for Teaching and Learning by the American Association of School Librarians.
"StudyBlue is a free mobile study service that helps students learn. Using a Digital Backpack, students store, study, share, compare and ultimately master course material. Working alone or together... students create more than one million flashcards each week when school is in session. StudyBlue offers digital flashcards with images and audio, cloud storage for notes, personalized practice quizzes, crowdsourced study guides and more.
Available online or as app for iPad/iPhone or Android.
Via Beth Dichter