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一、背景介绍“用字母表示数”是学习代数知识的重要内容,是学生由具体的数过渡到用字母表示数,在认识上的一次飞跃。对七年级孩子来说,本课内容较为抽象与枯燥,教学有一定难度。我认真思考了课程标准中关于字母表示数部分的目标要求,注意到在原有知识技能的掌握应用要求上,怎样“注重、强调让学生充分体验和经历用字母表示数的过程”十分重要。所以我设计了试图让学生充分经历用字母表示数的过程的教学环节,力求使教学信息在教学过程中
First, the background introduction “Use the number of letters ” is an important part of learning algebraic knowledge, is the student from a specific number of transition to the number of letters, in a leap in understanding. For seventh-grade children, the content of this lesson is more abstract and boring, teaching a certain degree of difficulty. I seriously thought about the objectives and requirements of the curriculum standard for the alphanumeric part, noting how important it is to emphasize the process of allowing students to fully experience and experience the use of alphanumeric characters in the mastery of application requirements of previous knowledge and skills. " . So I designed a teaching session that tried to get students to fully experience the process of using alphanumeric characters to try to make the teaching information in the teaching process