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在数学概念教学中怎样引导学生从直观到抽象呢?我的做法是在学生思维的转折处搭好由具体到抽象的“桥”,帮助学生脱离直观达到抽象。例如“除法的初步认识”这节课,我注意搭好三次“桥”,培养了学生抽象概括的能力。第一次搭“桥”,借助学生分粉笔的各种分法,建立“平均分”的概念。先出示一道准备题:“把6支粉笔分给2个小朋友,有几种分法?”在学生发现许多不同分法的基础
How to guide students from intuition to abstraction in mathematical concept teaching? My approach is to put “bridge” from the concrete to the abstract at the turning point of students' thinking so as to help students to get rid of intuition and achieve abstraction. For example, in the lesson of “Preliminary Understanding of Divisions,” I paid attention to setting up “bridges” three times to develop students' abilities to abstract abstractions. The first ride “bridge”, with the students sub-chalk various points, the establishment of “average” concept. First to prepare a question: “The six chalk points to two children, there are several points?” Found in many students based on different points