Science, Tech, Math › Science What Is a Science Fair? Science Fair Definition Share Flipboard Email Print Science projects usually involve help from parents, teachers, and other adults. Blend Images - KidStock, Getty Images Science Chemistry Activities for Kids Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated July 03, 2019 A science fair is an event where people, usually students, present the results of their scientific investigations. Science fairs often are competitions, though they may be informational presentations, depending on the topic. Most science fairs take place at the elementary and secondary educational levels, though other age and educational levels may be involved. Origins of Science Fairs in the United States Science fairs are held in many countries. In the United States, science fairs trace their beginning back to E.W. Scripps' Science Service, which was founded in 1921. The Science Service was a nonprofit organization that sought to increase awareness and interest in science by explaining scientific concepts in nontechnical terms. The Science Service published a weekly bulletin, which ultimately became a weekly news magazine. In 1941, sponsored by Westinghouse Electric & Manufacturing Company, the Science Service helped to organize Science Clubs of America, a national science club which held its first national science fair in Philadelphia in 1950.