用比喻的方法讲授物理概念,不仅能提高学生的学习兴趣,而且有助于他们对概念加深理解。教学“加速度”时,学生容易将“加速度”与“速度大”混淆起来。为此,我作了这样的比喻:一个少年和一个刚出生的婴儿,就身高而言,显然前者大于后者。但在相同时间间隔内,谁身高变化得快呢?显然又是后者。“身高”好比“速度”, Using metaphorical methods to teach physical concepts can not only improve students’ interest in learning, but also help them deepen their understanding of concepts. When teaching “acceleration”, students tend to confuse “acceleration” with “large speed”. For this reason, I made this metaphor: a teenager and a newborn baby, in terms of height, obviously the former is greater than the latter. But whoever changes his height during the same time interval is obviously the latter. “height” is like “speed”