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在物理课堂教学中,教学目标的设定应根据学生的实际情况对学生合理预期,让每个学生在他们的最近发展区得到最好的发展.对 a=(△x)/T~2的教学就很能体现这方面的思想.在传统的教学中,公式 a=(△x)/T~2的教学无疑是高一教学和高三总复习的一个重要知识点,也是学生的易错点,在每年高考和各阶段测试中,更是经常考查的.进入新课程之后,如何在这个知识点上体现新课程改革的思路呢?首先,对于基础较为薄弱的学生可以不讲.因为这个公式虽然对于处理纸带类问题很有用也很方便,但多年教学实践表明:他们很难理解公式中 T 的确切含义,在解题时只会死套公式而盲目出错,甚至是
In physics classroom teaching, the setting of teaching objectives should be based on the actual situation of students and students should be reasonably expected to allow each student to get the best development in their most recent development area. For a=(△x)/T~2 Teaching can well reflect this kind of thinking. In traditional teaching, the teaching of the formula a=(△x)/T~2 is undoubtedly an important knowledge point for the first-year teaching and the third-year review, and it is also an error-prone point for students. In the annual college entrance examination and each stage of the test, it is often examined. After entering the new curriculum, how can we reflect the idea of new curriculum reform in this knowledge point? First of all, for students with weak foundations, we can not speak because of this formula. Although it is useful and convenient to deal with paper tape problems, but many years of teaching practice shows that: it is difficult for them to understand the exact meaning of T in the formula. When solving a problem, it only blindly sets the formula and makes mistakes. It is even