This unit on natural resources is one in a series of three prepared for use in the classroom. An interdisciplinary approach encompassing mathematics, science, and social studies is utilized in these environmental units. This material is designed for middle grades and above. Many of the activities are open-ended with each activity in this unit emphasizing the use of our natural resources. The unit is divided into mini-units dealing with forests, soil and minerals, water, and wildlife. For some of the mini-units student worksheets are provided which can be easily duplicated. Thought questions are presented to facilitate logical thinking based on skills and knowledge of mathematics, science, and social studies. Role-playing situations are included to stimulate the students' imaginations. (JP)