《传热比赛》课堂实录与评析

Class Record and Analysis of “Heat Transfer Competition”

本课是在学生认识了"什么是热,热在冷水和热水中是怎样传递的"之后,进一步探究热传导的规律,引领学生对热在物体中是如何传递的问题进行有根据的猜想,尝试作出合理的假设;再通过设计实验、实验观察等探究活动,让学生认识到热可以从高温物体传向低温物体,在同一物体上也可以从高温部分传向低温部分。同时激发学生利用热传导知识设计产品,解决生活中的问题,感悟到人类社会的需求是科学技术发展的动力,技术的发展和应用影响着社会的发展。

This course is to further explore the law of heat conduction after students understand"what is heat and how heat is transferred in cold water and hot water",lead students to make reasonable conjectures about how heat is transferred in objects,and try to make reasonable assumptions;Then through the design of experiments,experimental observation and other inquiry activities,let the students realize that heat can be transferred from the high temperature object to the low temperature object,and on the same object,it can also be transferred from the high temperature part to the low temperature part.At the same time,students are inspired to use heat conduction knowledge to design products,solve problems in life,and realize that the needs of human society are the driving force of the development of science and technology,and the development and application of technology affect the development of society.