从探究斜面的机械效率说起——关于物理教学中科学探究的思考

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物理学习中的科学探究能够使学生保持强烈的好奇心和求知欲,通过对探究活动的反复体验,可以使他们领悟探究方法,在建构自己的知识经验体系的同时发展探究能力和自主学习的能力,养成良好的思维习惯.在教学中引导学生进行科学探究应注意以下几点.一、创设问题情景,激发学生探究兴趣在学习课标教材“功和机械能”中“机械效率”一节时,在学生知道了机械效率是有用功占总功的百分比之后,对于探究斜面机械效率的事例,笔者安排学生对日常生活中一幕进行分析:小明和小亮分别骑自行车上一道斜坡,魁梧强壮的小明沿着坡路一直冲了上去,身单力薄的小亮则骑着车走 S 形轻松的上到了 Scientific inquiry in physics study can make students maintain a strong curiosity and curiosity. Through the repeated experience of inquiry activity, they can make them comprehend the method of inquiry and develop the ability of inquiry and self-study while constructing their knowledge experience system. , To develop good habits of mind in teaching guide students in scientific inquiry should pay attention to the following points: First, the creation of problem scenarios to stimulate students to explore interest in the learning textbook “mechanical and mechanical energy ” "mechanical efficiency In a section, after students learned that mechanical efficiency is a percentage of total work, the author arranges for students to analyze the scenes of daily life in the case of exploring the mechanical efficiency of inclined planes: Xiaoming and Xiaoliang ride a slope on a bicycle , Burly strong Xiaoming along the slope has been washed up, the body is thin and light riding a car to go S-shaped easily on the
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