Let children learn to judge their own work.小题1:if corrected too much， he will stop talking. He notices a thousand times a day the difference between the languages he uses and the language those around him use. Bit by bit， he makes the necessary changes to make his language like other people. 小题2:they learn to do without being taught-to walk， run， climb， whistle， ride a bicycle-compare those performances with those of more skilled people， and slowly make the needed changes. But in school we never give a child a chance to find out his own mistakes for himself， let alone correct them.小题3:We act as if we thought that he would never notice a mistake unless it was pointed out to him， or correct it unless he was made to. Soon he becomes dependent on the teacher. Let him do it himself. Let him work out， with the help of other children if he wants it， what this word says， what answer is to that problem， whether this is a good way of saying or doing this or not.
If it is a matter of right answers， as it may be in mathematics or science， give him the answer book.小题4:
Why should we teachers waste time on such routine work？小题5:Let’s end this nonsense of grades， exams， marks， Let us throw them all out， and let the children learn what all educated persons must some day learn， how to measure their own understanding， how to know what they know or do not know.
A．Our job should be to help the child when he tells us that he can‘t find the way to get the right answer.
B．Point out his mistakes.
C．In the same way， when children learn to do all the other things,
D．Let him correct his own papers.E. We do it all for him.
F. We allow him to learn from other children.
G.A child learning to talk does not learn by being corrected all the time；
2Z(g)，到达平衡后，Y的体积分数为a%，然后再向容器中通入2 mol Z，保持在恒温恒压下反应，当达到新的平衡时，Y的体积分数为b%。则a与b的关系是