1.问题提出“二元一次不等式表示的平面区域”这一内容,尽管苏教版教材是安排在一元二次不等式之后单独一节课,作为二元一次不等式组与简单的线性规划问题的起始课,它是学习本节内容的基础.在实际教学中,它的地位和作用并没有引起一线教师的足够重视,部分教师对此认识不到位,教学用时过少,力度不够,把 1. The problem is raised as “the planar area represented by a bivariate inequality”. Although the teaching materials of the Sujiao texts are arranged in a separate lesson after the one-quadratic inequality, as a set of binary inequalities with a simple linear programming problem Of the initial lesson, which is the basis for learning this section in the actual teaching, its status and role did not pay enough attention to front-line teachers, some teachers do not know this place, teaching is too little, the intensity is not enough, the