初中物理教材中5个光学演示实验的改进

Improvement of Five Optics Demonstration Experiments in the Junior Middle School Physics Teaching Material

初中物理教材中的光学演示实验能够增强学生对光学知识的理解与掌握.但是在教学实践中也发现,教材提供的光学演示实验设计有局限,受到教学环境和天气等因素的影响,演示时常不能达到设计所期望的效果.本文选取初中物理教材中的5个光学演示实验,就实验器材及演示方法进行了一些改进.期望这些改进能够改善演示实验的演示效果,帮助教师更好地完成教学任务,帮助学生学好光学.

The optics demonstration experiment in junior high school physics teaching can enhance students′understanding and grasping to optics.But the studies also found in the teaching practice that the design limitation of the optics demonstration experiment exists.Due to the influence of environment and weather,etc.,the presentation often cannot achieve the desired effect.The thesis selects five optics demonstration experiments in junior middle school physics teaching material,improves the experimental equipments and presentation methods.It′s been hoped that these improvements can improve demonstration effect,and help teachers to better complete the teaching mission,and help student to better learn optics.