六年制小学数学课本12册的第二单元第二、三节都是体积教学。从课本内容看,主要是静态教学,也有动态教学(如将圆柱体拼成长方体)。但主要是静态教学。特别是练习部分,更是只求一个孤立、简单物体的体积,这对发展学生空间观念似乎不够。为了进一步发展学生的思维能力,提高学生的兴趣,我在教好课本知识的基础上,在活动课中增加了动态教学内容,收到良 The second unit of the 12th volume of the six-year primary school mathematics textbook is Volumetric Teaching. From the textbook content, mainly static teaching, but also dynamic teaching (such as the cylinder spell into a cube). But mainly static teaching. Especially in the practice part, it only requires the size of an isolated and simple object, which does not seem to be enough to develop the concept of student space. In order to further develop students 'thinking skills and enhance students' interest, based on the knowledge of textbooks, I added dynamic teaching content to the activity class and received good