This curriculum guide presents activities to help students understand the importance of cooperation between citizens and sanitation workers to keep the city clean. The booklet contains two types of activity sheets. Data-based activity sheets present students with current sanitation-related issues, such as garbage disposal, cleaning costs, and resource recovery, and ask for their input on possible solutions. Some other data-based activities provide students with a historical context for these current issues. The second type of activity sheet presents students with dilemmas designed to help them explore the consequences of their actions and to understand the need for social responsibility. Fourteen of the activities are geared to grades 1 to 6. Fourteen are for secondary schools. Each activity sheet is designed for reproduction and distribution to the students. On the back of each sheet are performance objectives, suggestions to the teacher for implementing the activity, and additional optional activities. A variety of techniques are used including role-playing, small group discussion, problem-solving, brainstorming, interviews, and "hands-on experiences." Each activity sheet is meant to be a springboard for discussion. (PS)