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初中算术課本中习題十一第11題(1.甲数比乙数少37.5％,乙数此甲数多百分之几? 2。甲数比乙数多150％,乙数比甲数少百分之几?),一般多不易使学生理解而正确地解出。笔者仅就教学实践中所取得的一点經驗,将这題的教学方法写在下面,供同志們参考、指正。由于学生对整数的大小比較的問題异常熟习,以至容易把它用在这个习題上的原故,在教学时先将这題緩讀一遍并突出“多”,“少”二字,以引起学生对这題的自觉地思考,
In the junior high school mathematics textbooks, the eleventh item of the eleventh problem (1. The number of nails is 37.5% less than that of the number B, and the percentage of the number B is more than a few hundred percent. 2. The number of nails is 150% more than that of the number B, and the ratio of number two to number one. What is a few percent less? Generally, it is not easy for students to understand and solve it correctly. The author only wrote a bit of experience in teaching practice and wrote down the teaching methods of this topic below for reference and correction by comrades. Due to students’ unusual familiarity with the problem of the comparison of the size of integers, it is easy to apply it to this problem. In teaching, this question is first read over and highlights the words “many” and “less” in order to attract students. Thinking consciously about this question,