Graphical user interfaces, systems, and methods of implementing electronic flashcards are disclosed. Embodiments provide an interface for enabling information on a selected side of an electronic flashcard to be displayed and hidden. For example, the information on a first side of an electronic flashcard may be displayed while the information on the second side is hidden, thereby enabling a user to test himself or herself before revealing the information on the second side of the electronic flashcard. The interface may also enable placement or storage of inactive electronic flashcards in multiple piles or stacks. For example, electronic flashcards which have not yet been viewed may be displayed in a first pile, while previously viewed flashcards may be displayed in one or more additional stacks. Additionally, the interface may limit the number of flashcards in one or more of the stacks. Further, the interface may perform automated shuffling of the flashcards.