论文部分内容阅读
《中小学数学》2012第3期《中考题中值得玩味的四种概率题型》一文,对数学中考的概率题概括为以下四类题型:一、以函数或方程为背景的概率题;二、以几何图形为背景的概率题;三、以物理知识为背景的概率题;四、以融入生活中的元素为背景的概率题.正如文章所说:以引起你关注,增进你备考的信心!本人颇有同感.我觉得将“二、以几何图形为背景的概率题,”改为“以几何图形或图形面积为背景的概率题,”则使文章更完美,让中考中的四种概率题型更值得玩味!因为利用图形面积来求概率是典型的几何概率,
In the “Primary and Elementary Mathematics” 2012 issue 3, “Four Kinds of Probability Question Types in the Exam Questions”, the probabilistic questions for the Mathematics Exam are summarized in the following four types of questions: 1. Probability problems with functions or equations as the background; Second, the probabilistic problem with geometric background as background; third, the probability question with physics knowledge as the background; fourth, the probabilistic question with the background of integration into the life. As the article said: to attract your attention and increase your preparation Confidence! I am quite sympathetic. I think that “2. Probability problems with geometry as background” should be replaced with “Probability problems with geometry or graphic area as the background,” making the article even more perfect. Four kinds of probability questions in the entrance exam are more worth pondering because the use of graphic area to calculate the probability is a typical geometric probability,