论文部分内容阅读
物质密度的测定是中考的一个重点.它既能考查学生的思维层次和创新意识,又能考查学生处理生活中实际问题的能力及综合应用知识的能力.在这个考点上,近年来各地区试题改革力度大,试题的形式变化多,主要出现了如下四类新型题型:一是密度测量的实验设计型试题;二是与密度有关的联系学生实际的试题;三是把密度的测量与压强、浮力等知识相结合的综合性试题;四是密度测量方法的开放性试题.一、密度测量的一般方法
The determination of material density is one of the key points in the senior high school entrance exam.It not only examines students ’thinking level and innovative consciousness, but also examines the students’ ability to deal with practical problems in life and comprehensive application of knowledge.In this test center, The intensity of reform is large, and there are many changes in the form of test questions. There are mainly four types of new test questions as follows: one is the experimental design test of density measurement; the other is related to the actual test questions related to the density; the third is the measurement of the density , Buoyancy and other knowledge combined with a comprehensive test questions; Fourth, the openness of the density measurement test questions. A general method of density measurement