This publication is designed as a guide for the instructional program in science for grades 4-6. The first part contains performance goals and conceptual schemes. Emphasis is placed on the teaching of science as content and as process. The processes to be included and outlined are: observing, classifying, communicating, measuring, inferring, predicting, identifying and controlling variables; formulating hypotheses; using and formulating operational definitions; using and formulating models; and experimenting. Laboratory work is stressed where the classroom and the community as a whole serve as a field of experimentation for children. The interrelation of science with other areas of the curriculum is encouraged, especially those learning activities which are appropriate for career motivation. The roles of the teacher and the principal are stated. The units in the guide are not grade-placed but represent a three-year span, grades 4-6. They include the three major strands of science: Physical, Earth, and Life Science. For each strand, the concept, performance objectives, materials, and learning activities are stated in detail. Evaluation is to be broad and continuous but in an informal manner. (GA)