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数学应用题一方面是培养学生观察问题、启发思考问题的好素材,能使学生在获得知识的同时提高思维能力;另一方面,它也是高考的热点内容,却又是学生的弱点,必须得到重视和关注.本文结合平时教学中对一道例题的两种呈现方式的教学片段谈谈体会.一、教学片段问题1在平面直角坐标系中,在y轴的正半轴上给定A,B两点,在x轴的正半轴上求一点C,使∠ACB取得最大值.问题2一壁画,最高点A处离地面4m,
On the one hand, mathematical application questions are to train students to observe the problem, to inspire good thinking material, enabling students to acquire knowledge and improve their thinking skills; the other hand, it is also a hot topic college entrance examination, but also a weakness of students must be obtained Attention and concern.This paper combines two kinds of presentation of a typical example of the teaching segment to talk about experience.First, the teaching fragment problem 1 in Cartesian coordinate system, the positive axis of the y-axis given A, B Two o’clock, in the positive x-axis to find a little C, so ∠ ACB maximum value. Question 2 a mural, the highest point A from the ground 4m,