SCIENCE EQUIPMENT, TEACHING AIDS, AND MODELS THAT HAVE BEEN OR ARE BEING DEVELOPED THROUGH THE NATIONAL SCIENCE FOUNDATION'S SCIENCE TEACHING EQUIPMENT DEVELOPMENT PROGRAM ARE DESCRIBED IN THIS BULLETIN. REPORTS FROM ALL PROJECTS SUPPORTED UP TO MARCH 15, 1963, ARE INCLUDED. ITEMS ARE CLASSIFIED ACCORDING TO DISCIPLINE AND APPROPRIATE INSTRUCTIONAL LEVEL. DESCRIPTIONS OF THE PROJECTS INCLUDE--(1) THE DIRECTOR'S NAME, DEPARTMENT, AND INSTITUTION, (2) A BRIEF SUMMARY OF THE PROJECT ACTIVITIES, AND (3) SOURCES OF FURTHER INFORMATION. THIS DOCUMENT IS ALSO AVAILABLE AS NSF 63-15 FROM THE NATIONAL SCIENCE FOUNDATION, OFFICE OF SCIENCE INFORMATION SERVICE, WASHINGTON, D. C. 20550. (AG)