用等效替代法巧解习题

用等效替代法巧解习题安徽省潜山中学徐大可所谓等效替代法就是将一个复杂的研究对象、或复杂的物理过程在对所研究问题等效的前提下，用一简单明了的对象或过程取而代之．中学物理中如力的合成与分解、串并联电阻的等效电阻、串并联电容器的等效电容、交流电的有效值等均...

利用射影定理巧解课本习题

举例说明应用射影定理如何解决平面几何问题。

Promotion of Project-Based Learning Aimed at Professional Skills

Project-based learning theory is applied in Software English course. The aim is to develop students＇ professional skill. A professional skill scale of software engineer is introduced with Software English communicative skill （reading skill, writing skill, listening skill, and communicative skill）, engineering thinking habit （skill of design the plan and problem-solving skill）, engineering thinking skill, knowledge of software engineering, and Emotion Quotient to deal with problems （Team spirit and communicative skill and self-assessment skill）. For software majors, students learn about five stages and job responsibilities in software making process.

“等效负载法”与“等效电源法”解决变压器问题的优越性

变压器问题的常规思路是寻找原线圈和副线圈电压电流的关系,再结合变压器的规律综合求解。这种方法效率低下,学生较难在短时间内准确算出答案。利用“等效负载法”与“等效电源法”可以有效地提高解题速度和准确度,具有很强的优越性。