4. Individual stucienu demonstration. This method can produce very effective demonstrations, espe- cially if the student has peer status. An effective way to have individual student demonstrations is to have upperclassmen, from advanced science classes, demonstrate to the lowerclassmen. A freshman general science class may become enthralled when a physics or chemistry senior comes into the class to give a demonstration. An upperclassman, excited about giving a demon stration, helps to convey that excitement to the students