The Flash exercise system developed by Intetics is aimed to support children of different age groups in learning mathematics and help teachers control the learning process. Each lesson represents a game which involves visualization and sounds. The game consists of two parts: Explore Activities allow students to explore a new thing or learn an operation, and Challenge Activities enable them to solve related problems and practice what they have learned. This part provides probing questions to help identify misunderstandings and stimulate discussions. Clicking the Check button gives feedback on whether the child’s answer was correct. The response to a successful answer contains visual/audio playoff, while the response to an incorrect answer is not too negative, and it usually contains additional information to help students review their decisions.