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情境应用问题在中考卷中通常都是以代数类的应用考查为主(如方程、不等式或函数应用题,这在前面一轮复习时同学们已很熟悉),而几何类情境应用题并不多见,然而2014年河北省以一道正方形为载体的行程问题作为压轴题,让小学生看后都想小试身手,又涵盖了初中阶段很多核心概念,是一道不可多得的好题,本文尝试对该题思路突破,并给出解后反思.考题(2014·河北)某景区的环形路是边长为800米的正方形ABCD,如图
Situation application problems in the examination papers are usually based on the application of algebra class test (such as equations, inequalities or function problems, which in the previous round of review when the students are already familiar), and geometric situations do not apply the problem However, in 2014, Hebei Province took a square as the carrier of travel issues as a finale issue, so that primary school students would like to try their best, but also covers many of the core concepts of junior high school stage is a rare good topic, this article attempts On the problem of thinking breakthrough, and give solution after reflection. Test questions (2014 · Hebei) A scenic area of the ring road is a side length of 800 meters square ABCD, as shown