Group discussion for classification of water quality.

In the subject of water supply and wastewater engineering, the students learned about how to manage and design in the water supply system. The content of this subject that always made them contused is the water quality, where explains types and its impacts. In the past, the lecture based was the method that I used to teach the students, which may made them bored and no attention. From this problem, the group discussion method has been applied to improve their memorizing and understanding.