This publication, the third in a series of seven for elementary schools, is an environmental education curriculum guide with a focus on waste management issues. It contains a unit of exercises selected for second grade students to introduce the ideas that littering causes environmental problems, both man-made and natural objects cause litter, and serious problems result when people do not taken responsible action. Litter is cited as one pollutant problem that very young children can comprehend and solve. They can learn to dispose of waste properly, help recycle some items, and come to understand how their own behavior affects the environment. The activities included in this unit nurture a first step in building a sense of environmental awareness and responsibility. The unit presents the following major ideas: (1) litter can injure people and animals; (2) litter takes money and effort to clean up, it wastes resources, causes pollution, and lessens the beauty of the environment; and (3) people cause litter and have the responsibility for handling waste properly. Each activity in the unit meets the Virginia Department of Education Standards of Learning Objectives for Science; however, the material is designed to be interdisciplinary and may also be used to meet social studies, health, language arts, mathematics, or art requirements. A list of additional resources (articles, magazines, educational curricula) is included. (MCO)