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张院士要跟同学们谈谈鸡兔同笼问题,一起看看吧.对于鸡兔同笼问题,同学们并不陌生,比如:鸡兔共有17个头,50只脚,问有多少只鸡,多少只兔.小学生的思考方法是:如果17只都是鸡,应当有34只脚.现在有50只脚,比34只多16只,是因为有兔.有1只兔,多2只脚,有多少只兔才多16只脚呢?当然是8只了.于是鸡有9只.
Zhang Academician should talk to students about the same cage with the cage, take a look at it.For the same cage with chicken, students are no stranger to, such as: a total of 17 chicken head rabbit, 50 feet, asked how many chickens, How many rabbits. Pupils thinking is: If all 17 are chicken, there should be 34 feet. There are now 50 feet, more than 34 only 16, because there are rabbits. There is a rabbit, more than 2 feet , How many rabbits only 16 more feet? Of course, is 8. And so there are 9 chickens.