Both the teaching of the free enterprise system and the teaching of geography are an integral part of the guidelines for elementary school social studies in most states. The two have been combined into a resource unit for studying localities so that students may understand that U.S. citizens, the environment, and the economy are interdependent. This series of lesson plans, originally written for students in grades 4-7 in the Black Hills area of South Dakota, provides activities which explore the interrelatedness of planning, climate, geographical landforms, available natural resources, and economic activity. These statements are used to define the relationships: a community is a group of people who live in one area under one government; economic activity is the work people in the community do to earn a living; resources are needed to carry on economic activities; and planning is the way people in a community use resources wisely. Guided practice and formative evaluations include charting, simulation games, large group concentration, writing biopoems, economic bingo, and various types of student responses. (Author/BZ)