在高一力学教学中,最重要的和最困难的是如何上好“台阶”.而在第一章《力》中能否上好“台阶”是整个力学教学的关键.本人在教学中的体会是:“二力平衡”问题是上好“台阶”的好“扶手”!在初中力学中“二力平衡”作为重点内容已学习过,相信学生有比较深刻的认识和理解,学生对“大小相等、方向相反、作用在一条直线上”的表述记忆得比较清楚.即使不很熟悉,经教师提醒,学生也会很快地回忆起来.所以,在教学中不失时机地 In high school mechanics teaching, the most important and the most difficult thing is how to do a good job of “stairs.” And in the first chapter “force”, whether or not the “step” is the key to the entire mechanics teaching. The experience in teaching is: “The two forces balance” problem is the good “step” good “handrail”! In the middle school mechanics “two force balance” as a key content has been studied, I believe The students have a deeper understanding and understanding. The students have a clearer understanding of the expressions of “equal in size, opposite in direction, and acting in a straight line”. Even if they are not very familiar, they are reminded by the teacher that the students will quickly recall them. Therefore, we lose no time in teaching