美国纽约有一所穷人学校,数十年来,该校的毕业生在纽约警察局的犯罪记录最低。通过调查研究发现,原来这是因为该校的学生都知道铅笔有多少种用途。原来在这所学校,学生入学后接受的第一堂课就是:一支铅笔有多少种用途?在课堂上,孩子们明白了铅笔不仅有写字这种最普通的用途,还能作为礼品送人表示友爱,笔芯磨成粉后可做润滑粉,演出时也可临时用于化妆,野外探险时抽掉芯还能当作吸管喝石缝中的泉水,遇到坏人时还可 There is a poor school in New York City, United States where graduates of the school have the lowest criminal record in the New York City Police Department for decades. Through the investigation and study found that originally this is because the school’s students know how many uses pencil. Originally in this school, the first class students receive after admission is: How many uses a pencil? In the classroom, children understand that the pencil not only has the most common use of writing, but also as a gift That friendship, the pen can be made into powder powder ground into powder, the performance can also be temporarily used for make-up, when expelling the wild core can also be used as a suction pipe to drink the spring of the stone in the face of bad guys