笔者于2015年11月参加湖北省高中青年数学教师优秀课比赛,获得省一等奖,课题为《一元二次函数、方程和不等式》,但上过之后,感觉对于衔接课还有许多改进之处.经过武汉市教研室、湖北省教研室相关专家的指导,经过多次试讲,反思,修改,2016年11月,笔者又用同一课题为武昌区教师做网络研修培训上了一节公开课,收到了很好的效果,以下是课堂实录. In November 2015, the author participated in Hubei Province high school young mathematics teacher excellent class competition, won the first prize in the province, the subject of “a dollar quadratic function, equation and inequality”, but after passing, I feel there are many improvements for the convergence class After Wuhan teaching and research department, teaching and research department of Hubei Province, the guidance of relevant experts, after many trial, reflection, modification, in November 2016, the author again with the same subject for Wuchang teachers do network training on a public class, Received good results, the following is the class record.