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xiao zhen kong da shi jie
Author(s): 
Pages: 35-36
Year: Issue:  3
Journal: Experiment and Equipment for Primary School

Abstract: 真空对初中生来说比较神秘、新奇、有趣,苏科版初中物理教材中也涉及了多个与真空有关的实验,比较典型的有《声音不能在真空中传播》、《马德堡半球实验》等. 利用好真空,不但能使学生更好地掌握基本知识,而且对培养学生学习兴趣、拓展思维空间都有极大的帮助.但由于原有的实验器材如抽气机、钟罩等太笨重,不方便使用、维修保养难度大、实验效果不佳等因素,有些教师对这部分真空实验选择敬而远之.
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