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最近,老正教我们关于比和比例的知识。比和比例在生活中的应用随处可见,比如班里男生和女生的人数之比啊,泡果汁时按说明书上的介绍根据一定的比例倒入一定的开水啊,根据比例绘制出地球仪和地图,等等。并且,大家知道吗,被誉为人类智慧的结晶、世界七大奇迹之一的埃及金字塔的高度的测量,最初也是通过比例的知识获得的。据说在2600多年前,古埃及有个国王,想知道最高的金字塔的高度,可是在当时的历史和科学条件下,谁也不知道测量金字塔高度
Recently, Old Orthodox taught us about ratio and proportion of knowledge. Proportions and proportions in life can be seen everywhere, such as the ratio of the number of boys and girls in the class ah, bubble fruit juice according to the instructions on the introduction of a certain percentage according to a certain proportion of boiling water, according to the proportion of the globe and map, and many more. And, as you know, the height measurement of the Egyptian pyramid, known as the crystallization of human wisdom and one of the seven wonders of the world, was also initially obtained through proportional knowledge. It is said that more than 2,600 years ago, there was a king in ancient Egypt who wanted to know the height of the highest pyramid. However, under the historical and scientific conditions of that time, no one knew about measuring pyramid height