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【教学目标】1.理解并掌握方程的意义,认识方程与等式间的联系与区别。2.通过在不同的情境中建立等量关系列方程,经历方程模型的建构过程。3.初步培养观察、抽象概括等能力。【学情分析】课前对五年级一个班的25名学生以问卷和访谈形式进行调研,调研结果如下:1.由前测题“妈妈给了小红20元钱,小红买课外书花去15元后还剩9元,你知道小红自己原来有多少钱吗?”班级24人均用算术方法解题,可以看出使用
Teaching Objectives 1. To understand and grasp the significance of the equation, to understand the equation and the relationship between the equation and the difference. Through experiencing equal relational column equations in different contexts, we experience the process of constructing the equation model. 3. Preliminary training, abstraction and other abilities. Academic analysis】 【class before the fifth grade of a class of 25 students in the form of questionnaires and interviews conducted the survey, the survey results are as follows: 1 by the former title “mother gave 20 yuan small red, red buy books After spending 15 yuan left 9 yuan, do you know how much the original red how much money? ”Class 24 people solve the problem arithmetically, you can see the use of