smartboard zogi.The memory of mathematics knowledge is based on understanding and application . Especially for primary school students who remember fast and forget too fast , after each new lesson , they need to design a larger amount of exercises to strengthen and consolidate , so that they can finally remember and transform. Ability to use. If the design of each exercise is simply relying on a single, rigid presentation of small blackboards, papers, books, etc. , students will be bored for a long time. At the same time , it is difficult for these forms to realistically create a scene in which mathematics is closely related to life. Therefore , this time using the whiteboard to play its maps, text, sound like, and Mao's many features and advantages , can practice, review and other sectors are also relaxed, happy , enable students to do problems remain pleasant in the process, the desire for progress mental state , to further enhance the students' knowledge of mathematics learning self-confidence , making them feel that learning mathematics is a happy thing. In addition , whiteboard technology can increase the teaching density and increase the classroom capacity , so that students can receive more practical exercises with more life interest at the same time. Use the whiteboard to perform different forms of exercises , such as : games, selections, fills, puzzles, etc. , as well as a variety of questions ,A multi-solution training. To solve the traditional teaching practice questions in a single, boring questions , so that students tired of practicing phenomenon be changed. For example , after teaching the ??Preliminary Understanding of Scores?? , I designed the game that the students liked . The first level of the game is also a consolidation exercise : according to the score given , the following graphics are painted. Students use spray barrel in electronic whiteboard , blank graphic painted a favorite color , students not only to consolidate the new knowledge learned , but also exercise the ability , to stimulate students' desire for knowledge , to mobilize the enthusiasm of student learning. On the other hand , the classroom blackboard capacity is affected to some extent , the use of whiteboard storage capabilities can put some graphics, text and other pre-existing whiteboard which , in due course presented in the classroom , to improve teaching efficiency.