From the point of the order of cheeper mathematics teacher and student, the method that parents adopt generally is, teach the child to learn count first, can count 100 later, teach 5 less than again add subtration, be 10 less than next, of 20 less than, finally is 100 less than. This kind already is used to the ground to accept order of habitual mathematical teacher and student for people actually not scientific. From the point of the practice of cheeper mathematics teacher and student, the education measure that compares science ought to undertake according to the following order:
1, learn count.
Count learns first before learning computation, this everybody knows, but use a variety of count forms to be computational found, be ignored by place of parents of quite a few however. Many parents can be sung in the child read 1 ～ 100 later think the child already learned count, and can teach computation, but the conception that actually the child did not build number truly, also did not master truly enumerated skill.
The content of count actually a lot of, besides the man-to-man conception that should build number, include the mastery of a skill or technique of a variety of count even, main form has:
① N is added 1, press namely increase by degrees the order of 1 a move in chess or a movement in wushu, this is to learn N to increase 1 calculative base;
② N is decreased 1, press namely degressive the order of 1 pours a move in chess or a movement in wushu, this is to learn N to reduce 1 calculative base;
③ counts singular number, establish odd concept;
④ counts even numbers, establish even concept;
⑤ meets 10 number, establish carry concept;
⑥ meets 5 number, will 5 as a main unit, this is a very main count mastery of a skill or technique, because increasing count and computational skill respect, the importance of 5 is next to 10.

2, computational N is added 1, always can wearing it is ordinal that ordinal count understands its implication increase by degrees 1 cheeper, learn computational N can easy to doly to add 1, include 10 add 1, 20 add 1, 99 add 1 and even 100 add 1.
3, computational N is decreased 1, always can pour count and understanding its implication is ordinal and degressive 1 cheeper can learn computational N to reduce the problem of 1, include 11 decrease 1, 21 decrease 1, 100 decrease 1 and even 101 decrease 1.
4, make 10 addition or decrease, be like 10 add 10, 20 add 10, ... 90 add 10, always can meeting 10 count understand its implication is ordinal increase by degrees or decrease successively 10 cheeper learns easily.
5, make 5 addition or decrease, be like 0 add 5, 5 add 5, 10 add 5 and even 95 add 5, always can meeting 5 count understand its implication is increase by degrees or decrease successively 5 cheeper, master it is not difficult to rise.
6, computation 10 add N, include 10 add 1, 10 add 2... 10 add 9, once cheeper understands 10 add a few be equal to ten, not only can fast operation 10 add N, still can popularize to 20 add N, 30 add N and even 90 add N.
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