This booklet, one of a series developed by the Frederick County Board of Education, Frederick, Maryland, provides an instruction module for an individualized or flexible approach to 7th, 8th, and 9th grade science teaching. Subjects and activities in this series of booklets are designed to supplement a basic curriculum or to form a total…

Part of a sequential series of curriculum units in environmental education for grades 4 through 12, this curriculum guide focuses on environmental problems in the United States for eleventh grade students. This unit is designed to make the student aware of how the problems of the past become critical problems of the present. Activities foster an…