数学是一门逻辑思维很强的学科,它培养学生分析问题、解决问题的能力及创新能力。新课程倡导:学生主动参与、乐于探究、勤于动手,并且强调学生探索新知识的经历和获得新知识的体验。要把教学作为一个过程来进行,不能作为一个结果来进行。正是由于以上的认识,在设计本节课时,教师所考虑的不是简单告诉学生等差数列的定义和通项公式,而是创设一些数学情境,让学生自己去探索、发现,从而去证明应用等。在这个过程中,学生在课堂上的主体地位得到充分发挥, Mathematics is a highly logical discipline, which fosters students’ ability to analyze, solve and innovate. The new curriculum advocates: students take the initiative to participate, willing to explore, diligent, and emphasizes students experience and acquire new knowledge of new experiences. Teaching should be conducted as a process that can not be carried out as a result. It is precisely because of the above understanding, in the design of this lesson, the teacher is not considering the simple to tell the students such as the definition of differential columns and general formulas, but to create some mathematical situations, so that students themselves to explore, find, to prove that the application Wait. In this process, the student’s dominant position in the classroom is fully played,