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师:同学们,能不能计算老师手里这个盒子的体积? 生:先用直尺量出它的长、宽、高,再用长方体体积公式计算它的体积。 (学生很快量出盒子的长12.5厘米、宽8厘米、高5厘米,并计算出体积500立方厘米) 师:如果用这个盒子装沙子(沙子不超出盒子),能装多少呢? (举手的很少,但有不少的学生已经在窃窃
Teacher: Students, can calculate the volume of the box in the hands of the teacher? Students: first with a ruler to measure its length, width, height, and then use cuboid volume formula to calculate its volume. (The student quickly measures 12.5cm long, 8cm wide and 5cm high and calculates a volume of 500cm³) Teacher: If I use this box to hold sand (the sand does not go beyond the box), how much can I load? Few hands, but many students are already theft