英语翻译1）在古代,人们都没有清晰的数字的概念.后来人们逐渐地认识数字,先通过石头或者鹅卵石来记数,然后用记号或手指来记

1) In ancient times,people have no clear digital concept.Later people gradually understand digital,first through the stone or pebbles to numeration and then use a sign or fingers to count,until now the decimal numeration using the Arabic numeral calculation method.Understanding this history is very interesting.
2) Do kumon purpose lies in,the steps to clear organized,correct use of add,subtract,multiply and divide autor four operation method and skillfully problem-solving.Again how cunning difficult solution math,only use the right steps can solve.
3) For him,every kept calculation without rest is a kind of burden.
4) Don't forced him to do what he don't want to do,this is not the best way to solve problems.
5) The third grade math teaching goal is solid,including four computing method mastery add,subtract,multiply,and besides,etc.