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经济性:研制教具既要考虑到使用效果,也要考虑到成本造价.特别是自制教具更应注意到这一点.能用廉价的材料,就不用昂贵的,能用简单的加工方法,就一定不用很复杂的.否则,就失去了自制教具的基本意义,还不如去买正规的仪器了.使用易得的廉价的材料制作教具,并不一定会影响教学效果.伟大的物理学家麦克斯韦尔就曾经说过:“一项演示实验使用的材料越简单,学生越熟悉,就越想彻底地获得验证的结果.这种实验的教育价值往往与仪器的复杂程度成反比.使用自制简易设备的学生常比用精密仪器的学生学到的多,……”这段话讲得很确切.
Economical: The development of teaching aids must take into account the use of effects, but also take into account the cost of the cost. In particular, self-made teaching aids should pay attention to this point. Can use cheap materials, do not have expensive, can use simple processing methods, it must be There is no need to be complicated. Otherwise, the basic meaning of self-made teaching aids will be lost. It would be better to buy regular instruments. Making use of readily available cheap materials to produce teaching aids does not necessarily affect teaching effectiveness. Great physicist Maxwell It has been said: “The simpler a material used in a demonstration experiment is, the more familiar the student is, the more he wants to completely obtain the result of the verification. The educational value of such an experiment is often inversely proportional to the complexity of the instrument. The use of self-made simple equipment Students often learn more than students who use precision instruments....” The passage is very precise.