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教学目标:学生利用四巧板动手操作,通过观察实验探索并掌握平行四边形面积公式,能解决相应的实际问题。教学重点:探索并掌握平行四边形面积公式。教学难点:理解平行四边形面积公式的推导过程,体会转化的思想。教具与学具:四巧板、课件教学过程:一、介绍四巧板谈话引入:今天的数学课,玩一个和数学有关的玩具,让我们来看看。谁来介绍一下这个玩具。出示四巧板,学生观察四巧板。学生对四巧板进行介绍。二、拼摆四巧板你能用四巧板拼成什么图形?自己拼拼看,拼的
Teaching Objectives: Students use hands-on operation of the puzzle, to explore and master the parallelogram area formula by observing the experiment, to solve the corresponding practical problems. Teaching Focus: Explore and master the area of parallelogram formula. Difficulties in teaching: understanding the derivation process of parallelogram area formula, understand the idea of transformation. Teaching aids and learning tools: four-choker, courseware teaching process: First, the introduction of four-choker talk introduction: Today’s math class, play a toy and mathematics, let’s take a look. Who will introduce this toy. Show four-choker, students observe the four-choker. Students introduce the jigsaw puzzle. Second, put together the puzzle You can use the puzzle made of what kind of graphic? Their spelling fight, fight