According to AASL, "Don’t assume that Vocabulary.com is just another digital flashcard site. This innovative site uses an adaptive learning system to help users learn the most essential English words needed in academic and business environments. Users quickly begin building their vocabulary knowledge as the adaptive learning system questions, reviews, and leads users to word mastery. Fun example sentences and responses “with an attitude” help keep the users’ attention, along with the level and achievement badges that can be earned. Leaderboards keep track of top achieving students and schools, creating a challenging game-like environment. Customized vocabulary lists can be added and grouped by categories, such as literature, historical documents, and speeches."  To see the website click here.