小题1:Let children judge their own work. /Let children learn by themselves. /Give children chances to learn by themselves.
小题2: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.
小题3:If (he is) corrected too much/frequently/toooften
小题4:(A teacher should) offer help when a child asks for it. A teacher should help the child when he can’t find the way to get the right answer.
小题5:(The author thinks) them (that they are) nonsense /useless/ meaningless/pointless/(that) they make no sense.