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编前语很多同学在学习中都遇到过这样的问题:学习了质量、密度、力、压强、机械能、简单机械等知识后,不知道怎么把这些知识串起来.也就是说,单纯地考查一个问题,可以很快得出正确答案,但题设信息稍微改变,就不知道如何解答第二个问题.针对这种情况,我们特邀河南濮阳市油田第18中学的杜英杰老师写了两篇关于“题源”的文章,将八年级下学期所学的物理知识串起来,帮助同学们快速高效地提高学习质量,如果您在阅读这两篇
Preface Many students in the study have encountered such a problem: learning the quality, density, force, pressure, mechanical energy, simple machinery and other knowledge, do not know how to string together these knowledge .That is to say, simply test A problem, you can quickly get the correct answer, but the subject set a slight change in information, you do not know how to answer the second question.In response to this situation, we invited Henan Puyang Oilfield 18 Middle School Du Yingjie teacher wrote two Article on the “source” of the article, the eighth grade next semester learned physics string together to help students quickly and efficiently improve the quality of learning, if you are reading these two articles