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初中物理教学的最初阶段,许多教师都很重视学生兴趣的培养.演示趣味性实验,讲演物理学家的故事,评说中国古代的发明创造等等.这些都能较好地激发学生的兴趣,但是,事实说明那些兴趣都不长久、稳定.如果在学习物理中遇到了困难,兴趣便会减弱、或转移,或消失.要使学生有长久的、稳定的兴趣,在于自己能发现问题,又能自己解决.为此列举两例.例1(1)GB40电视机的屏幕是16 1in,相当于40 cm,它是指屏幕的哪一段长度?(2)从上述条件中,你能否确定上述长
In the initial stage of junior high school physics teaching, many teachers attach great importance to the cultivation of students’ interest, demonstrating interesting experiments, lecturing physicists’ stories, commenting on the inventions and inventions in ancient China, etc. All of these can arouse students’ interest well, however , The fact that those interests are not long, stable.If encountered difficulties in learning physics, interest will be weakened, or transfer, or disappear.To enable students to have long-term, stable interest in that they can find problems, but also (1) GB40 TV screen is 16 1in, equivalent to 40 cm, which refers to the length of the screen? (2) From the above conditions, you can determine the above long