课标导航1.经历由具体问题抽象出一元二次方程的过程,进一步体会方程是刻画现实世界中数量关系的一个有效的数学模型.2.经历方程解的探索过程,增进对方程解的认识,发展估算意识和能力.3.了解一元二次方程及其相关概念.理解配方法,会用因式分解法、公式法、配方法解简单的数字系 Course navigation 1. Experience the process of abstracting a quadratic equation from specific problems, and further understand that equations are an effective mathematical model that characterizes the quantitative relationships in the real world. 2. Experience the process of solving equations to increase the understanding of equations. , Develop estimates and competencies. 3. Understand one-dimensional quadratic equations and related concepts. Understand methods of matching, use factorization, formulas, and methods to solve simple numerical systems.