This is the first of a series of three articles, undertaken by the ERIC Center for Science and Mathematics Education, on three national elementary science projects (Elementary Science Study, AAAS--Science - A Process Approach, Science Curriculum Improvement Study) sponsored in part or in whole by the National Science Foundation. Six areas are…

Describes the purpose and preparation of a science unit box which contains materials, ideas, and resources for more effective science teaching. Lists and explains the 14 basic components that each box should contain including behavioral objectives, manipulatives, science concept and process list, and lesson plans. (RT)