Metric instructional units, including objectives, pretests, posttests, and resource materials, were developed for grades 1 through 5. Metric objectives and a metric test were developed for teachers. Books, charts, games, and kits used as resources in the units were evaluated according to SI guidelines. Five teachers, one from each grade level, attended an in-service program in preparation for teaching the instructional units in their classrooms. Instruction was given to 120 students. An analysis of the test data revealed that at least 60% of the teachers mastered 42% of the objectives. At least 75% of the students mastered 43% of the objectives in grade 1, 89% in grade 2, 77% in grade 3, 45% in grade 4 and 50% in grade 5. (Author/MK)