Students usually respond favorably to changes of pace in their classroom sessions. A guest speaker, a film, or a colloquy can provide a welcome change from the lecture hour. A state Farm Bureau Safety Director has illustrations to capture the interest of an Agricultural Mechanics class for a period on "Farm Shop Safety Practices." Students understand ovulation after observing it in a colored movie. Three or four dairymen with good DHIA records usually can sell a Farm Management class on the values of record keeping. The effectiveness of even a superior instructor is enhanced when he calls in experts for specific topics.
teaching aids, classroom television, laboratory