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向学生布置练习以前,教师应做些准备工作: 首先,教师应把教本中所有练习题自己细心地演算一遍,以便对它们有所了解——教本为各节基本知识配置了哪些题目,分小节地把这些题目的题号记录下来,以便进一步备课时参考。其次,这些题目的难易程度如何,为了达到巩固本节基础知识与熟练运用本节基础知识的初步目的,其份量又如何?是否须要补充一些基本的或综合的练习题。再次,就应该着手考虑选题——哪些题易于揭露数学概念与规律的本质内容,哪些题便于培养学生在各种场合下,直接地、间接地运
Before arranging exercises for students, teachers should do some preparatory work. First, teachers should carefully calculate all the exercises in the textbook so that they can understand them. What does the textbook have for each section? Record the titles of these questions for reference during further lesson preparation. Second, how easy are these topics and how much should they be used for the initial purpose of consolidating and mastering the basics of this section? Some basic or comprehensive exercises need to be supplemented. Thirdly, we should start to consider the topics - which topics are easy to expose the essence of the concepts and laws of mathematics, and which topics are convenient for students to train directly and indirectly on various occasions