This document consists of three sections. Section I contains 19 activities developed by master teachers for the Science World '84 summer science program. These activities focus on studies involving airplane controls, trash bag kites, computers, meteorology, compass orienteering, soils, aquatic ecosystems, bogs, and others. Objectives, materials needed, and procedures used are provided for each activity. Section II contains 47 activities used in the Science World '84 exploratorium. The exploratorium is a classroom filled with activities that students can complete individually. These activities (which can take anywhere from 1 minute to 1 hour to complete, depending on the nature of the activity) utilize content from the biological, physical, earth, and environmental sciences. Topics explored include endothermic and exothermic reactions, acceleration of steel balls, the greenhouse effect, conservation of mass, living cells as electrolytes, energy flow, lung capacity, and Pascal's rule. Each exploratorium activity includes a challenge (such as "Try to stick a pin in a balloon without breaking the balloon"), procedures, and list of materials needed. Section III is a list of all the master teachers and guest presenters who took part in Science World '84. (JN)