“曹冲称象”的故事我们大家都很熟悉,聪明的曹冲先把大象赶上船,看船被水淹没到什么位置,在船上刻上记号。然后把大象赶上岸,往船里装石头,当船被水淹没到记号处时,就可以断定船上的石头有多重,大象就有多重。为什么大象的重量等于这船石头的重量呢?因为船两次下沉的深度一样,只有当大象与石头一样重时,船下沉的深度才会一样。“曹冲称象”运用了“等量代换”的思考方法:两个完全相等 We are all familiar with the story of “Cao Chong's name,” Cao Chong clever Cao first catch the elephant to see where the boat was flooded, engraved on board the mark. Then the elephants were overtaken by the shore and loaded into the ship. When the ship was flooded to the markings, it was possible to conclude that the stones on the ship were multiple and the elephants were multiples. Why is the weight of an elephant equal to the weight of the ship? Because the ship sinks twice as deep, the depth of the ship's sinking will be the same only when the elephant weighs the same as the stone. “Cao Chong said” using the “equivalent substitution” thinking: two are exactly the same