1966年,美国的老师给小学生每人发一只计算器,以减少计算的难度,结果,儿童们的计算能力普遍下降二十世纪末,中国的珠心算实验学校发给学生一把小算盘,结果,学生们的计算能力大大超过同龄儿童 In 1966, a teacher in the United States issued a calculator for primary schoolchildren to reduce the difficulty of calculation. As a result, children’s computing power generally dropped. At the end of the 20th century, China’s Abacus Experimental School sent students a small abacus. As a result, , The computational power of the students greatly exceeds the same age children