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让学生学好数学,重点是学会思考,发散思维是关键,学生在做题过程中就能够举一反三,由点及面,由浅入深,细品2014年河北中考数学第26题(压轴题)笔者深有感触。一、试题呈现题目:某景区内的环形路是边长为800米的正方形ABCD,如图1和图2.现有1号、2号两游览车分别从出口A和景点C同时出发,1号车顺时针、2号车逆时针沿环形路连续循环行驶,供游客随时免费乘车(上、下车的时间忽略不计),两车速度均
Let students learn mathematics, the key is to learn to think, divergent thinking is the key, the students in the process of doing things will be able to give top priority to others, from point to surface, from shallow to deep, Have feelings. First, the test questions: A scenic area within the ring road is a side length of 800 meters ABCD square, as shown in Figure 1 and Figure 2. The existing No. 1 and No. 2 tour buses from the exit A and C at the same time, 1 No. car clockwise, No. 2 car counterclockwise along the circular road continuous cycle for tourists at any time free ride (on and off the time negligible), both vehicle speed