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苏教版四年级数学下册《解决问题的策略》是进一步运用列表和画图的方法去探究数量之间的内在连接,找准量变化的本质因素,发现规律,学习利用规律解决问题。梅山小学有一块长方形花圃,长8米。在扩建校园时,花圃的长增加了3米,这样花圃的面积就增加了18平方米。原来花圃的面积是多少平方米?课例一:师:你发现了哪些数学信息?生:长方形花圃,长8米。长增加了3米,面积增加18平方米。生:要求原来花圃的面积。师:你打算用什么方法表明这些信息
The fourth edition of the fourth edition of the Sujiao Mathematics Problem Solving Strategy is to further use list and drawing methods to explore the inherent connection between quantity, identify the essential factors of quantity change, discover the law and learn to use the law to solve the problem. Meishan primary school has a rectangular flower garden, 8 meters long. When expanding the campus, the length of the garden increased by 3 meters, which increased the area of the garden by 18 square meters. The original flower garden area is the number of square meters? Lesson 1: Teacher: What mathematical information you found? Students: rectangular flower garden, 8 meters long. Long increase of 3 meters, an increase of 18 square meters area. Health: the original flower garden area. Teacher: What are you going to do to show this information?