“较复杂的分数应用题”是小学数学的重要内容,由于数量关系比较抽象,学生不易理解和掌握。为了使学生轻松愉快地学好这部分内容,我在教学中充分利用投影手段,收到了良好的教学效果。 一、课题的揭示 为减轻学生的心理负担,创造良好的教学氛围,我首先将原例题改编成学生熟悉的准备题,制成复合片投影出示: 苍海号捕鱼船五月份捕鱼2400吨,六月份捕鱼 “More complicated score application questions” is an important part of primary school mathematics, because the number of relations is more abstract, students are not easy to understand and master. In order to enable students to easily and happily learn this part of the content, I make full use of projection in teaching, received a good teaching effect. First, the disclosure of the subject To alleviate the psychological burden of students and create a good teaching atmosphere, I first adapted the original example into a student familiar with the preparation questions, made of composite film projection shows: Canghai fishing in May 2,400 tons of fishing , Fishing in June