ROBERT G. LeCOMPTE majored in English (A. B., St. Benedict’s, 1935) and has worked primarily as a communicator—reporter, house-organ editor and photographer, military-information officer and instructor, public-relations consultant, and information and exhibits specialist. He joined the Atomic Energy Commission’s staff at Albuquerque, New Mexico, in 1951, transferring in 1957 to the AEC’s Headquarters, where he is Exhibits and Education Officer in the Division of Technical Information. His concern with science stems from aviation writing, World War II service as an Air Force pilot and technical-intelligence officer, science-news reporting, and requirements for presenting AEC scientific-technical developments to the lay public. He has been involved in science fair activities since 1960, when he began the study which led to establishment of AEC Special Awards for outstanding nuclear-related exhibits at the National Science Fair-International. BURRELL L. WOOD is a chemist (A.B. in French and B.S. in Chemistry, Presbyterian College, 1940; M.S. in Chemistry, University of Georgia, 1942; Ph. D. in Chemistry, University of North Carolina, 1952). In 1953, while head of the Chemistry Department at Furman University, Dr. Wood organized a statewide science fair program in South Carolina. He moved to the New Mexico Institute of Mining and Technology in 1957, and expanded that state’s program by organizing four regional science fairs. He joined the staff of Science Service in 1960 and edited _Chemistry_ magazine and “Things of Science” experimental kits. In 1961 he joined the Atomic Energy Commission’s Headquarters staff and is now Exhibit Coordinator in the Division of Special Projects. He served at the National Science Fair-International in 1962 and 1963 as a judge of nuclear-related exhibits considered for AEC Special Awards. Atoms at the Science Fair Exhibiting Nuclear Projects by ROBERT G. LeCOMPTE and BURRELL L. WOOD SCIENCE PROJECTS, EXHIBITS, AND FAIRS In almost every area of endeavor, we learn best by _doing_. Books and lectures provide background, but it is by putting theory into practice that we make knowledge truly our own. To learn a language, we read and speak it. Our knowledge of mathematics follows practice at problem solving, and so it is with science. Science Projects In conducting a good science project, we work in much the same manner as professional scientists. Like them, we observe, experiment, investigate, speculate, and check the validity of our speculations with more experiments, all in order to learn something. If our work is good, others may learn from it too, but only if we present it adequately.