When I found that is not yet attained. The teacher would try to do anything, such as improving teaching method. Use the questions to stimulate, and to make the students to achieve learning goals.
When that did not achieve Teachers will need to do anything such as a teaching method. Provoking questions, etc. to make students achieve learning goals.
When found is still not achieved, teachers must try to do anything, such as to improve the teaching methods, use คำถามกระตุ้น, etc., to make the students achieve the learning