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矢量运算在高中物理学习中意义重大且使用频繁。笔者通过研读教材内容,发现人教版普通高中课程标准实验教科书《物理1》第四章第三节“牛顿第二定律”一节例题1的表述逻辑上存在问题,找出了教材示例对学生认知负迁移的根本原因,从而指出了对矢量运算有效教学的具体方法。题目某质量为1 100 kg的汽车在平直的路面上试车,当速度达到100 km/h时关闭发动机,经过70 s停了下来。汽车受到的阻力多大?重新起步加
Vector computing is of great importance and frequent use in high school physics. The author through the study of textbooks, found that the PEP ordinary high school curriculum standard textbook “Physical 1” Chapter IV, Section III “Newton’s second law ” section 1 of the statement there is a logic problem, to find examples of teaching materials Negative transfer of students to understand the root causes of negative, which pointed out that the effective teaching of vector computing methods. Problem A car with a mass of 1 100 kg was tested on a straight road and the engine was shut down at a speed of 100 km / h and stopped after 70 s. What is the resistance of the car? Start again