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一、量量算算 课前,教师在每个小组的桌上放一块用橡皮泥捏成的不同规格的物体。请同学们看看自己桌上的橡皮泥是什么形状?如果要计算出这块橡皮泥的体积,需要知道哪些条件? 1.学生量取有关数据,教师巡视并提醒学生:①量取数据时要取整厘米数。②组长要把量取的数据记录下来。 2.汇报、交流。各小组分别说说量取了几个数据?量取数据时需要注意什么?怎样计算基本形体的体积?在求这些基本形体的体积
First, the amount of calculation Before class, teachers put a piece of plastic sheeting on the table of each group into different specifications of the object. If you want to calculate the size of this plasticine, what conditions do you need to know? 1. The students take the relevant data and the teacher patrols and reminds the students: ① When measuring the data To take a few centimeters. ② The leader should record the measured data. 2. Report, exchange. The groups were talking about the amount of taking a few data? Measure data need to pay attention to what? How to calculate the size of the basic form? In seeking the basic form of the volume