以生为本 以学定教——《多边形》第一课时的教学与反思

• 作 者: 王建木
• 机 构: 浙江省绍兴市越城区富盛中学,
• 出 处: 初中数学教与学
• 发表日期: 2014年24期
• 关键词: 凹四边形 平行四边形 《多边形》 以生为本 方程思想 第一课时 以学定教

本文介绍《多边形》第一课时的教学设计和反思,以期与各位同行交流提高.1.引入师:这里有一个“脑筋急转弯”问题考考大家,有一张四方桌,被锯了一个角,还剩几个角?(可让学生到黑板上画图观察)设计意图此处用“脑筋急转弯”的方式,可以吸引学生的注意力,使他们能快速集中到课堂中来;同时,这个问题在小学里有类似的出现过,难度系数不大,学生相对容易接

This article describes the polygons first class teaching design and reflection, in order to exchange and improve with your colleagues .1. Introduction Division: There is a “brain teaser” question test everyone, there is a square table, saw a Corner, left corner? (Allows students to draw on the blackboard to observe) design intent here with “brain tease” way, you can attract students’ attention so that they can quickly focus on the classroom; In the meantime, this problem has appeared in elementary school similarly, the coefficient of difficulty is not big, the student is relatively easy to take