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“长方体和正方体的认识”是教学“长方体和正方体的表面积”与“长方体和正方体的体积”的基础。学生只有清楚地“认识”了长方体和正方体,才能清楚地理解长(正)方体的表面积与体积的计算方法。
“Understanding cuboids and cubes” is the basis for teaching “the surface area of cuboids and cubes” and the “volume of cuboids and cubes”. Only when students clearly “know” cuboids and cubes, can they clearly understand how to calculate the surface area and volume of the cubes.