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从高中教材内容上看,对牛顿第三定律的描述比较简单,不过规律的形成和重要性在高中阶段是不可或缺的.从新课程的要求出发,如何让学生完成牛顿第三定律的学习,提高物理科学素养呢?在物理教学中,笔者作了如下尝试.一、自主体验,感知规律表象1.借助媒体给学生展示教学情境情境1:一个人穿旱冰鞋推墙,看到墙没动,人倒退.情境2:两个原先静止的穿着旱冰鞋的人,一个人主动推另一个人,看到两人相互分开.从上述两个情境出发,引导学生质疑,并反思得到力的作用是相互的,情境2能够直观反映出来,情境1中的墙虽然没有动,不过应该也发生了微小形变.2.学生自主举例在学生都认为力的作用是相互的基础上,引导学生列举一些能够佐证自己观点的现象或小实验,让学生自主体
From the content of high school teaching materials, the description of the third law of Newton is relatively simple, but the formation and importance of the law are indispensable in the high school stage.From the requirements of the new curriculum, how to make students complete Newton’s third law of learning, Improve the physical science literacy? In physics teaching, the author made the following attempt.An autonomous experience, perceived regular appearances 1 with the media to show students the teaching situation Situation 1: a person wearing roller skates push the wall, see the wall did not move , People backwards .Scenario 2: two people who were originally wearing roller skates, one person pushing another person to see the two separated from each other .From these two situations, to guide students to question and reflect the role of force Is mutual, situation 2 can be directly reflected, while the situation in the wall 1 did not move, but should also occur minor deformation .2 student autonomy in the students think the role of force is mutual, based on the guidance of students to enumerate To support their own point of view of the phenomenon or small experiment, allowing students to self-body