Think-pair-share discussions: an active learning in the topic of heavy metal toxicity.

In toxicology course for second-year student, I was responsible for toxic effect of heavy metal and pesticides. There were a lot of materials for them to cover including biochemistry, anatomy, molecular biology and physiology. In the previous of time this 
topic was only lecture-base learning and the students receive the information resulting in they could not make a linkage between theory and real world situation. It is thus this topic was redesigned by addition of active leaning. Think-pare-share discussion is one of the teaching methods that help students process information rather than passive receive the information. Therefore, lectures play role as the facilitator to hold a discussion, or talk to one student at a time.