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物理教学中,要使学生熟练而灵活地运用物理基础知识去解决实际问题,必须努力开拓学生思路,启发学生积极思维。这是培养学生分析、解决问题能力的一条重要途径。下面谈谈开拓学生解题思路的几点做法和肤浅体会。一、顺着思路变化题意例如:如图一所示,在两块竖直放置的平行金属板A、B上端的中点Q处,放一带正电的小球,已知小球质量m=5×10~(-6)千克,带电量q-5×10~(-8)库仓,如果金
In physics teaching, students should be proficient and flexible to use physical basic knowledge to solve practical problems. Students must work hard to develop ideas and inspire students to think positively. This is an important way to train students to analyze and solve problems. Here are some of the practices and superficial experiences of opening up students’ ideas for solving problems. First, follow the train of thought to change the meaning of the problem. For example: As shown in Figure 1, at the midpoint Q of the two upper ends of the parallel metal plates A and B placed vertically, put a positively charged ball, known small ball mass m = 5 × 10 ~ (-6) kg, with a charge of q-5 × 10 ~ (-8) warehouse, if gold