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由于初中教材把速度定义为路程与时间的比值,在学生头脑中形成了非常深刻的印象,从而直接影响着高中平均速度和瞬时速度概念的学习。根据奥苏贝尔的有意义学习理论,在高一速度教学中采用先行组织者的策略,把上位学习转变为下位学习,避开认知冲突,降低了学习难度,使初高中教学成功地有机衔接。通过前后测对比,观察到较好实验的效果,有效地实现了概念转变。
Since junior high school textbooks defined speed as the ratio of distance to time, they formed a very deep impression on the students’ minds and thus directly influenced the learning of the concepts of average high school speed and instantaneous speed. According to Ausubel’s theory of meaningful learning, the strategy of advanced organizer is adopted in high speed teaching to transform the upper learning into lower learning, to avoid cognitive conflicts and reduce the difficulty of learning so that the teaching of primary and secondary high school can be successfully connected . By comparing the measured before and after, we observed the effect of better experiment and effectively realized the concept change.