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Quiz game.
It virtually draws "cards": first you can see the question and guess the answer. Then you can see the "answer" side of the card. Program registers if it matches or not.
Visual Quiz is a generic java applet for creating visual quizzes. It allows one to provide a set of question pictures and 3 or more answer pictures from which one is correct. The header text can be set to follow the theme.
Math game where up to 4 students can play online against each other. By moving their figurines around a colorful pseudo 3D board, players answer math questions and can play tricks against their opponents. Client and server distributed under Affero GPL 1.