This chapter describes demonstration, group discussion and project. Demonstration means any planned performance of an occupation skill, scientific principle or experiment. The most effective way to teach an occupational skill is to demonstrate it; one of the two most essential teaching skills is the ability to demonstrate; the other is the ability to explain. Both are vital to the success of either an operation lesson or an information lesson. Buzz session is a time limited (5–10 minutes) discussion by small groups (5–10 members) within a large audience that focuses on a specific question.