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列方程解应用题,是小学数学新增加的内容,是教学上的难点。我在讲解这部分内容时,采取启发式的方法,讲清题意,揭示规律,培养学生分析问题、解决问题的能力,让学生能够抓住找等量关系这个列方程的关键,学懂学活,举一反三。这堂课的内容是讲解一道例题: 天津到济南的铁路长357公里。一列快车从天津开出,同时有一列慢车从济南开出,3小时后相遇。快车平均每小时行79公里,慢车平均每小时行多少公里?
Column equation solution application questions, primary mathematics is the addition of new content, is a teaching difficulty. When I explain this part, I take a heuristic approach to clarify the problem, reveal the law, develop students' ability to analyze and solve problems, and enable students to grasp the key to finding the equation of equal relation, learning to learn Live, give top priority. The content of this lesson is to explain an example: Tianjin to Jinan railway 357 kilometers long. An express train departs from Tianjin, while a local train departs from Jinan and meets after 3 hours. Express train an average of 79 kilometers per hour, local train how many kilometers per hour?