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1制作背景新课标对高一物理“超重与失重”这节的活动要求:通过各种活动,例如乘坐电梯、到游乐场乘坐过山车等,了解和体验失重和超重.超重与失重现象最直观的表现是用测力计或台秤测物体的重力时示数会变大或变小.虽然学生通过坐电梯或坐过山车能获得亲身体验,但却无法直观地看到在超重和失重状态下测量示数的改变.因此这种体验活动是有局限性的.如果能让学生在课堂上亲眼目睹超重与失重现象,并能感受在现象中示数的变化,将更有助于学生对本节课的研究与学习.本教具“超重与失重现象演示仪”正是为了实现该目的而制作的.
1 Making a Background The New Curriculum Requirements for High Physics - Overweight and Weightlessness Requirements: To understand and experience weightlessness and overweight through various activities such as taking the elevator, taking a roller coaster to the amusement park, etc. Overweight and weightlessness The most direct manifestation is that when using a dynamometer or a scale to measure the gravitational force of an object, the indication becomes larger or smaller, and although students can gain personal experience by taking a lift or riding a roller coaster, they can not visually see that in overweight and weightlessness So this kind of experiential activities is limited.If you can let students witness the phenomenon of overweight and weightlessness in the classroom, and can feel the change in the number of signs in the phenomenon, will be more conducive to students to this The study and study of the lesson The present teaching aids, “Overweight and Weightlessness Presenting Instrument,” was made to achieve this goal.