摘要
针对力学教学中出现的学生乏味、无兴趣等现象,巧把玩具当教具,以溜溜球动力学模型构建为例进行课堂教学。根据溜溜球的运动过程,把溜溜球的运动过程分为向下做平面运动、滚动转向运动、向上做平面运动的三个阶段。在基本假设的基础上,建立了溜溜球在下降、滚动转向、上升过程中的动力学模型,得到溜溜球在不同阶段的速度、角速度、拉力随时间的变化曲线,并从能量角度分析了溜溜球的运动过程。该方法可以提升学生的学习兴趣和创新能力,为力学教学提供参考。
In view of the phenomenon of students'boredom and lack of interest in experiment teaching,using toys as teaching AIDS and taking the yo-yo dynamics model construction as an example to conduct the classroom experiment teaching.According to the yo-yo movement process,the yo-yo movement process is divided into three stages:downward plane motion,rolling steering motion and upward plane motion.On the basis of the basic hypothesis,the dynamics model of yo-yo in the process of falling,rolling steering and rising is established,the curve of yo-yo's velocity,angular velocity and tension changing with time in different stages are obtained,and the yo-yo movement process is analyzed from the perspective of energy.This method can enhance students'learning interest and innovation ability,which provides reference for the mechanics teaching and learning.
作者
张艳军
雷美荣
叶家根
Zhang Yanjun;Lei Meirong;Ye Jiagen(College of Architecture and Surveying Engineering,Shanxi Datong University,Datong,037003,China;College of Mechanical and Electrical Engineering,Shanxi Datong University,Datong,037003,China;College of Coal Engineering,Shanxi Datong University,Datong,037003,China)
出处
《中国现代教育装备》
2021年第23期129-131,134,共4页
China Modern Educational Equipment
基金
山西大同大学2020年研究生教育改革项目“提升地下空间技术方向研究生科研创新能力培养的实践与研究”(编号:20JG17)。
