一、设计说明教师要准确把握数学新课程的本质与内涵,坚持“以学生发展为本”的教学设计基本理念,把学生的起点作为教师的起点,用书本知识服务于学生有个性、可持续、全面和谐的发展。二、教学分析解一元二次方程(配方法),是在学生已经学过直接开平方法解一元二次方程的基础上,进一步研究它的解法的一个重要理论内容,它是前面知识的深化与总结。配方法解一元二次方程在整个中学数学中占有重要的地位,既可 First, the design instructions Teachers should accurately grasp the nature of the new mathematics curriculum and content, adhere to the “student development as the ” basic concept of instructional design, the starting point of the student as a teacher’s starting point, using book knowledge to serve students with personality, Sustainable, comprehensive and harmonious development. Second, teaching analytic solution A quadratic equation (with method), is the student has been learned directly Kaiping method of solving a quadratic equation based on the further study of its solution is an important theoretical content, it is the deepening of the previous knowledge and to sum up. The method of solving a quadratic equation plays an important role in the entire secondary school mathematics