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【教学内容】北师大版三年级下册第53、54页。【教学重点、难点】长方形和正方形面积计算公式的推导过程。【教学过程】一、开展游戏活动,创设问题情境游戏:考眼力,比大小。师:我们来做一个关于长方形的游戏。教师将一张橙色长方形纸贴于黑板,再依次抽出大小颜色不同的长方形。
【Teaching Content】 Beijing Normal University version of the third grade volumes 53,54 pages. 【Teaching focus, difficulty】 rectangular and square area of the derivation of the formula. [Teaching process] First, carry out the game activities, the creation of the problem situation games: test the eye, than the size. Teacher: Let’s make a game about the rectangle. Teachers will be an orange rectangular paper on the blackboard, and then in turn out the size of different colors and rectangles.