小学生的思维特点是以具体形象为主,逐步向抽象逻辑思维过渡。因此小学生对抽象的数学知识在理解上就会存在较大程度的困难。如果用投影手段来解决这些困难,效果将是显著的。但怎样运用这一手段才能收到最佳的教学效果?我认为关键在于数学电教课精心设计。下面就电教课的设计谈几点看法。 Primary school students' thinking features are mainly based on specific images and gradually transition to abstract logical thinking. Therefore, pupils understand the abstract mathematical knowledge there will be a greater degree of difficulty. If you use projection to solve these difficulties, the effect will be significant. However, how to use this method to receive the best teaching effect? ​​I think the key is that mathematics teaching class designed. The following on the design of electric education to talk about the views.