If the child still does not understand the content of the lesson the teacher should strengthen first. No need to hurry to the next lesson and learn lessons, Dai when children can remember.
If the child does not understand the lesson. Teachers also should be added to the previous No need to hurry to the next lesson would be. And the next chapter when children should learn to recognize it.
If the child still don't understand the content in the lesson, teachers should strengthen first, don't go to the next lesson ก็ได. And should be the next lesson when children can remember.