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在物理学习过程中,老师经常对“理想模型”强调得较多,因此学生头脑中形成了许多固化的理想模型。在面对很多真实问题解决时,若不能正确地分析实际问题并正确地建构物理模型,发现和揭示问题的本质,则容易形成思维障碍,难以获得实际问题的解决。一、研究问题美国《物理教师》期刊曾刊出了一个面向全世界的挑战性题目:一个串联两个电阻R_1和R_2的电路,理想电源电
In the process of physical learning, teachers often emphasize more on “ideal models,” so many solidified ideal models are formed in the minds of students. In the face of solving many real problems, if we can not correctly analyze the actual problems and correctly construct the physical model, discover and reveal the essence of the problems, it is easy to form the thinking obstacles and difficult to get the solution of the practical problems. First, the research problem The United States, “Physics Teachers” Journal has published a challenge for the world: a series of two resistors R_1 and R_2 of the circuit, the ideal power supply