代数是初中一门重要课程。虽然小学高年级已引入了一些代数的初步知识,但为了提高初中代数教学质量,有必要抓好七年级代数入门教学。这一时期重要的是帮助和引导学生完成两个转变:一是由学习上的依赖性向主动性和独立性转变;二是由概念判断、推理的具体性和感性经验向抽象的逻辑思维转变。如果学生能适应这一转变,取得学习上的主动权,就能打下良好的基础。因此,我作了下面的尝试: Algebra is an important course for junior high school. Although elementary schools have introduced some preliminary knowledge of algebra, in order to improve the quality of algebra education in junior high schools, it is necessary to do a good job in the introduction of seventh-grade algebra. The important thing in this period is to help and guide the students to complete two transitions: one is to change from learning dependence to initiative and independence; the other is to change the specificity and perceptual experience of concept judgment and reasoning to abstract logical thinking. If students can adapt to this change and gain the initiative in learning, they can lay a good foundation. So, I made the following attempts: