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陈重穆、梅向明主编的《实验教材》是以提出问题为出发点,也便于老师引导学生自己去发现问题,解决问题,因而学生的主动性,积极性都较高,如讲绝对值这一节,实验教材是让学生自己找有理数与算术数的对应关系而是列出一个表格。有理数:+2,+3 4,0,-2,-3 4,…算术数:2,3 4,0,3 4,…从这个表格而得出一个有理数对应的算术数就是这个有理数的绝对值,这种形式讲绝对值有三点好处:1、在学生可接受的情况下渗透了对应的思想。2、学生在已有算术的知识基础上找了与有理数的对应关系就推导出了新知识。3、由于表格一目了然,直观地得出每一个有
The “Experimental Textbook” edited by Chen Chongmu and Mei Xiangming is based on asking questions. It is also convenient for teachers to guide students to find problems and solve problems. Therefore, students’ initiative and enthusiasm are relatively high, such as the absolute value section. The experimental teaching material is for students to find the correspondence between rational numbers and arithmetic numbers, but to list a table. Rational numbers: +2, +3 4, 0, -2, -3 4, ... Arithmetic numbers: 2, 3 4, 0, 3 4, ... The arithmetic number corresponding to a rational number obtained from this table is the absolute number of this rational number. Values, this form of absolute value has three advantages: 1. Penetrates the corresponding thinking when students accept it. 2. The students have found new knowledge by finding the corresponding relationship with rational numbers based on the existing knowledge of arithmetic. 3, because the table is clear at a glance, intuitively come to every