论文部分内容阅读
一位教师在教数学“正反比例的意义”时,让学生从生活中寻找正反比例的例子,一个学生看到老校长坐在后面听课,就编了这么一道题:“老校长爱吸烟,一盒烟20支,吸掉一支,剩下19支,吸掉2支,剩下18支……吸掉的烟越多,多剩的烟就越少,变化正好相反,所以吸掉烟的支数和所剩的支数成反比例。”教师大为震惊,没想到编题会编到老校长头上。但冷静一想,觉得此题大有利用价值,于是急中生智,充分利用这种意外
When a teacher teaches mathematics “the significance of positive and negative proportion”, let students look for the example of positive and negative proportion in life. When a student sees the old principal sitting behind him, he compiles a question like this: Smoking, a box of cigarettes 20, suck one, the remaining 19, suck 2, leaving 18 ... The more sucked smoke, the more the less smoke, the opposite changes, so the suction The number of cigarettes dropped was inversely proportional to the number of remaining books. "The teacher was shocked and did not expect the title to be compiled into the headmaster’s head. But calm down, I think this question has great value, so Jizhongshengzhi, take full advantage of this accident