解答多步复合应用题,是小学生学习数学最感困难的。原因在于:第一、讲解例题的孤立化。教学时,把例题一个一个孤立起来讲,就题论题,没有引导学生从各类题目的联系和发展中去把握解题的关键;第二、分析方法的繁琐化。教学时,不论题目的难易,都按照固定的模式,进行冗长的分析推理,学生抓不到要领,思维活动分散在每一推理环节中,不能集中在新旧知识的联结点上,而且往往是思维活动处于最佳状态时,致力于前几步的分析推理,而在新旧知识联结点这一关键推理环节,思维活动却反而松弛下来;第三,练习内容的单一化。练习题 Answer multi-step composite questions, is the most difficult for primary school students to learn mathematics. The reason is: First, explain the isolation of examples. Teaching, the examples of one by one to talk about, on the topic thesis, did not guide students from all kinds of topics in the contact and development to grasp the key to solving the problem; Second, the cumbersome analysis methods. Teaching, regardless of the difficulty of the subject, are in accordance with the fixed pattern, lengthy analysis and reasoning, students can not grasp the essentials, thinking activities are scattered in every reasoning links, can not be focused on the juncture of old and new knowledge, and often When thinking activities are at their best, they are committed to the analytic reasoning of the previous steps, but in the key reasoning link between the old and the new knowledge links, the thinking activities are rather relaxed. Third, the content of practice is simple. Exercises