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小学数学的复习切忌单调重复。因此,教师要精心设计问题,调动学生学习的积极性,引导学生进行知识归纳。例如,小学一年级数学复习“20以内的进位加法”时,让学生写出得数等于13的加法算式有哪几个?学生在解答时,既有重复,又有遗漏,还缺乏条理、系统。据此,教师应点拨学生的思路,并教给一定的方法。如引导学生按从小到大的顺序加,就可分别写出得数等于13的加法有:0+13、1+12、2+11、3+10、4+9、5+8、6+7、7+6、8+5、9+4、10+3、11+2、12+1、13+0。在此基础上,教师要进一步启发学生思考:这道题还可以怎样解答?思维始于问题,学生经过
Primary mathematics review should avoid monotonous repetition. Therefore, teachers should carefully design problems, mobilize the enthusiasm of students and guide students to conduct knowledge induction. For example, in the first grade of primary school mathematics review “plus carry within 20”, let the students write the number of equal to 13, which addition formula? Students answer both repeated and omission, but also the lack of rules, the system . Accordingly, the teacher should point out the student's train of thought, and teach a certain method. Such as guiding students in ascending order, you can write the number of equal to 13 additions are: 0 +13,1 +12,2 +11,3 +10,4 +9,5 +8,6 + 7,7 + 6,8 + 5,9 + 4,10 + 3,11 + 2,12 + 1,13 + 0. On this basis, teachers should further inspire students to think: how can the problem be answered? Thinking begins with the problem, after the students