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现行初中三年级数学内容包括直角平面坐标系与统计初步知识。受到九年义务制教育的农民可以用平面坐标作出许多统计方面的表达与分析。入门学习应强调以下３点。首先，要掌握数（包括整数、小数、分数、正负数、零的意义及数轴概念），直线及其单位，平面直角坐标的基本定义。
Current third-year junior high school mathematics include rectangular plane coordinate system and statistical preliminary knowledge. Farmers who have received nine-year compulsory education can make many statistical expressions and analyzes using plane coordinates. Primer learning should emphasize the following three points. First of all, to grasp the basic definitions of numbers (including integers, decimals, fractions, positive and negative numbers, zero meanings and axes concepts), straight lines and their units, and plane Cartesian coordinates.