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【背景】苏教版小学数学第十册《正比例的意义》的内容是在学生已经积累了一定的比例知识及具备了一定的分析、抽象思维能力的基础上学习的。这部分内容两课时(本案例探讨第一课时内容),在这一课时主要通过学生观察两张不一样的表格来收集、整理相关信息,从中感受两种量变化的规律,逐步概括,形成正比例的概念,达到预期效果。【案例实施】一、创设情境,感悟“相关联的量”课堂写真一:小试验学生动手自由摆课前准备好的小正方体学具,堆一堆,叠一叠,
【Background】 The contents of the “proportionate significance” of the 10th Edition of the 10th Edition of the Primary School Mathematics of the Sujiao Edition are learned on the basis that the students have accumulated a certain proportion of knowledge and possess certain analytical and abstract thinking abilities. This part of the contents of two classes (the case study of the first class content), in this class mainly through the observation of two different forms of students to collect and organize relevant information, from which to feel the law of the two kinds of changes, gradually summed up to form a proportional Concept, to achieve the desired effect. [Case Implementation] First, the creation of the situation, sentiment “related amount ” Class photo one: small experiment students free Before the class prepared small cube learning, pile a pile, stack a stack,