Discuss with students the problems relating to disposing of an increasing number of manufactured materials and chemicals. Use school and community links. Look at the rubbish produced at school. Many things can be reused by another person. Sensible choices can reduce, reuse.
Children discuss each of the three areas in small groups.
The three headings are illustrated on a chart by children's drawings and magazine cutouts. Results published on spreadsheet and graphed for class display. Sort items collected from home into their material groups. Worm farm - study of school facility. Children in work groups brainstorm the ideas and facts relevant to each stage of the process.