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师出示问题情境:小明2/3小时走了2千米,小红5/12小时走了5/6千米。谁走得快些?师:一个数除以分数该怎样计算呢?我们以2÷2/3为例,先请同学们自
Teacher to produce the problem situation: Xiaoming 2/3 hours walked 2 km, red 5/12 hours walk 5/6 km. Who walk faster? Teacher: How to count a number divided by the score? We take 2 ÷ 2/3 as an example, the first students please