DEVICE FOR LANGUAGE TEACHING WITH TIME DEPENDENT DATA MEMORY

A computing device is adapted to construct a user-memory data structure for a user based on interactions with the user. The user-memory data structure may comprise a plurality of memory representations for concepts and items important for gaining proficiency in a subject matter. The memory representations are dynamic, and characterize how well each of the concepts and items are retained as a function of time by the user. The computing device uses the user-memory data structure to guide operation of the computing device.