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概念教学必须安排适量的配套练习,在讲完平方根概念后(沪科版七年级下第6章实数),我及时设计了一组训练题,让学生课堂练习.(选自安徽教育出版社出版的七年级下册《新编基础训练》第2页12题).1.课堂情景再现.师:前面几道题同学们做的都不错,下面我们再看一道题:如果一个数a的平方根是2m+1与m-7,求a.我们请两位同学上黑板分别完成这道题,看谁完
Concept teaching must arrange the right amount of matching exercises. After we finish the concept of square root (Shanghai Chapter seventh grade sixth real number), I designed a set of training questions in time for the students to practice in class. (From Anhui Education Publishing House The seventh grade of the next volume “new basic training” on page 2 12 questions) .1 classroom scene reproduction. Teacher: the first few questions students are doing well, here we look at a question: If a number of square root Is 2m + 1 and m-7, find a. We ask the two students to complete the problem on the blackboard to see who finished