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这个学期笔者承担了一节市级公开课,课题为《探究加速度与力和质量的关系》,这是一节我想上又不敢上却又不得不上的公开课,想上是因为想挑战一下自己.不敢上这节课的原因有三个:其一,平衡摩擦力不好解释,平衡摩擦力的步骤不好操作;其二,加速度不易测量,纸带处理过于繁琐,太费时间;其三,实验条件Mm不好解释,系统误差不好解释,不容易消除.三个难点加在一起,如果处理不妥当,授课的效果肯定不理
This semester I assumed a municipal open class, the subject is “to explore the relationship between acceleration and force and quality”, this is a section I did not dare to but have to open class, want to go because want Challenge yourself.Not dare to have this class for three reasons: First, the balance of friction is not good to explain the steps to balance the friction is not good operation; Second, the acceleration is not easy to measure, the tape is too cumbersome to handle, too time-consuming ; Third, the experimental conditions Mm poor explanation, the system error is not good to explain, not easy to eliminate. Three difficulties together, if not properly handled, the effect of teaching certainly ignored