巧设Δ用微元思想解决物理问题  

Cleverly SelectingΔ:Solving Physics Questions with Micro-Element Ideas

作　　者：徐清洪 杨冰 XU Qinghong;YANG Bing(Chongqing NO.8 Secondary School,Chongqing 401120)

机构地区：[1]重庆市第八中学校,重庆401120

出　　处：《物理通报》2024年第4期71-73,共3页Physics Bulletin

基　　金：重庆市教育科学“十四五”规划2022年度一般课题“基于培养物理学科关键能力的深度教学研究”阶段性成果,课题编号:K22YG111514.

摘　　要：微元法是分析、解决物理问题常用的方法,微元法可以把复杂的物理过程简化为学生熟知的简单的物理过程、物理规律.以3个问题为例,在分析和解决问题过程中通过微元法巧妙设置Δl、ΔT、Δθ,避开繁杂运算过程,旨在培养学生从局部到整体的科学思维和提高学生运用核心知识解决问题的能力.The micro-element method is a common method for analyzing and solving physical questions,and the micro-element method can simplify the complex physical processes into simple physical processes and physical laws that students are familiar with.In this paper,we take three question examples and cleverly setΔl,ΔT,andΔθthrough the micro-element method in the process of analyzing and solving questions,avoiding the complicated operation process,aiming to cultivate students′scientific thinking from the part to the whole and improve students′ability to use core knowledge to solve questions.

关 键 词：微元法 加速度 液柱移动 压强 转动切割 

分 类 号：G633.7[文化科学—教育学]