Kamolchart klomin. (2017, May-August). How to Learning Problem Based Learning : Coursed Design      and Development Coursed for Students Techers. Journal of Graduate Studies Valaya                    Alongkorn Rajabhat University. 11(2), 179-192

        Teacher will use the issue as a stimulant. To learning the nature of the problem that used to be a nebulous solutions to customers. There many be many answer 

     1) define the problem 

     2) understanding the problem 

     3) conduct a study 

     4) synthesis of knowledge

     5) summary and evaluation of answer

     6) presentation and evaluation.