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一元二次方程起始课是很多教研活动中的热点课题,相对而言也是比较容易找到备课切入点的课题,因为一元二次方程的开课情境可以有多样化的选取,既可关注现实生活中的二次方程背景,又可基于方程家族前后一致、逻辑连贯的特点,从一元一次方程出发,类比定义、学习一元二次方程.笔者近期有机会参与一节一元二次方程(第1课时)公开课的磨课活动,下面记录这次
The initial course of the quadratic equation is a hot topic in many teaching and research activities. It is comparatively easy to find a starting point for lesson preparation. Because the starting situation of the quadratic equation can be diversified, it can not only focus on real life Based on the quadratic equation background of the equation, and based on the consistent and logically consistent features of the equation family, starting from a one-degree-one-equation equation, we can learn the quadratic equation by analogy. I recently had the opportunity to participate in a quadratic equation (1) Open class grinding activities, recorded below this time