简答题：设计一张教学挂图，展示菜豆种子的结构。 (1)用示意图的形式展示你设计的挂图，并标出各结构的名称。(10分) (2)利用

题目内容：

设计一张教学挂图，展示菜豆种子的结构。
(1)用示意图的形式展示你设计的挂图，并标出各结构的名称。(10分)
(2)利用所设计的挂图设计一个教学活动。(20分)

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