在学习数学的过程中,学生需要逐步领悟,层层推进。解决问题时,可以在操作的过程中,深入感悟数学,进而有效构建数学模型。一、教学片段:《解决问题的策略——倒推》师:同学们,老师这里有2杯水(一个蓝色杯,一个红色杯),将蓝色杯中的水倒一部分到红色杯中,想知道原来哪杯水多吗?(例题1)生1:我想,把红色杯中刚才倒进的水再倒入到蓝色 In the process of learning mathematics, students need to gradually comprehend, push forward at every level. Solve the problem, you can operate in the process of insight into mathematics, and then effectively build mathematical models. First, the teaching fragment: “Problem Solving - Reverser” Teacher: Classmates, Teacher There are 2 cups of water (a blue cup, a red cup), the blue cup of water pour part of the red cup , Want to know which cup of water was it? (Example 1) Health 1: I think, just pour the red cup of water into the blue