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【教育案例】下面是两个“圆锥体积的应用”的教学案例。案例A:师出示例题:在建筑工地上,有一个近似于圆锥形的沙堆,测得底面直径是4米,高是1.5米。每立方米沙大约重1.7吨,
【Education case】 The following is a two “cone volume application” teaching case. Case A: Teacher gives example: On the construction site, there is a conical sand pile measuring 4 meters in diameter and 1.5 meters in height. About 1.7 tons of sand per cubic meter,