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2016年宁夏中考数学第24题的基本特点是知识与能力并重,思想与方法交融.从知识角度来看,主要考查反比例函数的性质、直角三角形的边角关系、三角形中位线的判定与性质等基础知识,这些知识内容均依据《义务教育数学课程标准》(2011年版),体现了试题的基础性;从方法与技能角度来看,主要考查平面直角坐标系中确定点的坐标的方法、利用待定系数法确定函数的表达式、坐标系中求图形面积的方法等最基本的方法与技能;从数学思想角度看,主要考查数形结合思想、方程思想等最基本的数学思想.本文给出本题的一系列变式及一般结论.
The basic characteristics of No.24 mathematics in Ningxia in 2016 is that both knowledge and ability are equal, and the thoughts and methods are blended in. From a knowledge point of view, we mainly study the nature of the inverse proportion function, the corner relation of the right triangle, the judgment and nature of the bit line in the triangle And other basic knowledge, which are based on “compulsory education mathematics curriculum standards” (2011 Edition), reflects the foundation of the test questions; from the method and skills point of view, the main test plane Cartesian coordinate system to determine the coordinates of the point method, The method of undetermined coefficient is used to determine the expression of the function and the method of calculating the area of the figure in the coordinate system, etc. The most basic mathematical method is to examine the combination of ideograms and equations of ideas from the perspective of mathematical thinking. A series of variants and general conclusions of the title.