Mario Rapisarda of Norwalk, Connecticut is a multi-media writer and producer whose credits include developing interactive teaching programs as well as being published in two technical textbooks. Mr. Rapisarda's varied teaching experience included the vocational school system of Connecticut, CETA job training programs for the Norwalk Board of Education, and the NTMA (National Tooling and Machining Association). A member of SME (Society of Manufacturing Engineers), his practical experiences are the result of working at different levels of engineering, beginning as an apprentice tool and diemaker.