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一、目的性原则 目前应用题课堂练习存在的主要问题是练习的单调和机械的重复,这两个问题的症结在于练习的盲目性。所谓目的性原则就是根据本课教学的目的任务,针对教学的重点、难点或易混易错的地方,精选练习题目,做到重点的内容重点练习,难点的问题突出练,易混的地方对比练。 例如,解答两步应用题是解答多步复合应用题的基础,因此,它是应用题教学的重点,也是难点。解答的关键是找出“中间问题”,课堂练习就要紧紧扣住这个要点,可以设计这样类型的练习。
First, the purpose of the principle The current application of the main problems in the classroom practice is the practice of monotonous and mechanical repetition, the crux of these two problems is the practice of blindness. The so-called purpose of the principle is based on the purpose of this lesson teaching tasks, focus on teaching, difficult or prone to misunderstandings, the selection of exercises, to focus on the content of the key exercises, difficult problems highlight practice, easy to mix place Contrast training. For example, answering two-step questions is the basis for answering multi-step composite questions, so it is an important and difficult teaching point. The key is to find out the “middle problem”, classroom exercises should be closely linked to this point, you can design this type of exercise.