This publication represents a model for the Natural Science Education Curriculum for grades two through four in Delaware's schools. This guide is meant to serve as a minimal standard for natural science education, but at the same time strives for maximum output of the natural science program. The guide is based on the processes of science education as well as the concepts and attitudes of the biological, physical, and earth sciences. Four basic goals have been identified and a set of terminal objectives has been established for each goal. These goals and objectives are to provide the framework for the development of district, local, building, or classroom programs. The guide lists eleven major processes of science education, suggests process ability levels, and identifies the six major concepts to be included in the natural science curriculum. Each concept grouping (concept-process-objective) is indicated in each of the major disciplines of science: biological, physical and earth sciences. The mathematics applications in the basic sciences are also indicated. A section on current educational philosophies that relate to the natural science educational program concludes this publication. (BT)