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【教学内容】苏教版小学数学三年级下册第82~83页。【教学目标】1.自主探索、交流、发现长方形和正方形的面积公式,能正确应用公式计算长方形和正方形的面积,并能解决相关的实际问题。2.在长方形和正方形面积公式推导过程中,发展观察能力、分析能力和抽象概括能力,增强空间观念。【教学过程】一、复习导入谈话:下面两个图形的面积各是多少平方厘米?(每个小方格的边长是1厘米)在小组里交流一下你的算法。
【Teaching content】 Sujiao primary school mathematics grade three volumes 82 ~ 83 pages. 【Teaching Objectives】 1. Independent exploration, exchange and discovery of rectangular and square area formula, the formula can be correctly used to calculate the area of rectangular and square, and can solve the practical problems. 2. In the process of deducing the area formula of rectangle and square, we should develop observation ability, analysis ability and abstraction ability, and enhance the concept of space. 【Teaching process】 First, the review Import conversation: The following two graphics area is the number of square centimeters? (Each small square side length is 1 cm) Exchange your group in the algorithm.