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如上节课教学‘三角形面积的计算’一样,在完成复习引入后,学生很自然地体会到用“转化”的方法来推导梯形面积的计算方法,接着同学们分组合作探索交流,精彩的片断也就在集体交流的过程中出现了:
As in the previous lesson, “Calculating the Area of the Triangle,” students naturally appreciate the calculation of the trapezoid area using the “transformation” method after completing the review. Students then collaborate in groups to explore and communicate. Piece also appeared in the process of collective communication: