M. Alexeep (1976), Developing Students' Thinking. Education Publishing House, Hanoi.
REFERENCES 1. M. Alexeep (1976), Developing students thinking . Education Publishing House, Hanoi. 2. Nguyen Thi Coi (2006), Ways and measures to improve the effectiveness of teaching History in high schools. Hanoi National University of Education Publishing House, Hanoi. 3. Nguyen Thi Coi, Trinh ...