【案例】《体积容积单位换算》是北师大版数学五年级的教学内容,在此之前,学生已经学习了体积的概念及常用的体积单位,明确了体积单位间的进率,并且能够较熟练地计算长方体和正方体的体积。而且,学生具有一定的动手操作能力和小组合作意识。在课的开始,我利用“猜猜哪个盒子装的多?”的小游戏来导入,在学生不同的猜测下,教师进行验证。学生看到结果与自己的想像不同,从而感受到体积大的物体不一定装的东西多。教师顺势指着盒子的内部空间,揭示容 【Case】 “Volumetric volume unit conversion” is the teaching content of the fifth grade of Beijing Normal University. Prior to this, students have learned the concept of volume and the commonly used volume units, clarified the rate of entry between volume units and can compare Skilled to calculate the cuboid and cube volumes. Moreover, students have some hands-on ability and sense of team cooperation. At the beginning of the lesson, I used the game “Guess which box to put more?” To import, under the different speculation of the students, teachers verify. Students see the results differ from their own imagination, and thus feel the bulky objects are not necessarily installed more things. Teachers take advantage of pointing to the internal space of the box to reveal the content