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纵观初中数学教学体系,“列代数式”教学安排在七年级上册3.1节“用字母表示数”第二课时。学生在第一课时已经初步了解了用字母表示数、代数式的概念以及代数式如何规范书写的简单要求,并学会如何列简单的代数式。为了突破教学重点,实现教学目标,本节课教学过程分为六个阶段:一、回顾旧知,启发新知
Throughout the junior high school mathematics teaching system, “algebraic type ” teaching arrangements in the seventh grade on the book 3.1 “number of letters ” the second lesson. During the first class, students have taken a first look at the simple requirements of using alphanumeric characters, concepts of algebra and how to regulate writing in algebraic ways, and learn how to write simple algebraic formulas. In order to break the teaching focus, to achieve teaching objectives, this lesson teaching process is divided into six stages: First, review the old knowledge, inspired the new knowledge