Kari's Earth Care

PURPOSE: This lesson is designed to increase the awareness of students about their responsibility for their community. By cleaning and recycling materials from a neighbohood park, lot, school grounds, etc.

MATERIALS: Gloves, safety glasses, trash bags, index cards, pencils, school bus, cameras (video & photo), lunch, directions to a recycle center in your neighborhood.


1. Make sure each student has gloves, trash bags, safety glasses, index card, pencil, (lunch and something to drink is to remain on the bus).

2. Select an area of the park to clean and start collecting the trash. Make sure to place the different materials in different trash bags, Example: Plastic in one bag, paper in another, and so on.

3. Before collecting, hypothesis which will be the highest percent of the materials collected.

4. As the materials are collected, keep a tally of how many items go into the trash bag.

5. Finish cleaning the area and count up the tally.

6. Now, figure the percent of each item by taking the total and dividing it by the grand total and multiplying by 100. Place the percents of the trash collected.

7. Write the percents on a large poster to display for all to see. Relate the information to the hypothesis.

8. This takes about an hour or two to complete. It depends on the site that you are cleaning. Take a break for lunch or water when needed.

9. Follow through, by taking the materials to a recycle center. If possible, at this time tour the center and make sure each student knows the procedure for recycling materials. Encourage your classes to continue this practice at home and remind them how easy it was for their science class.

These pages authored and maintained by Judy Lee.
Revised: June1, 2005 . Copyright 1998
CRPC GirlTECH. All rights reserved.



These pages were developed through GirlTECH '96,
a teacher training and student technology
council program sponsored by the
Center for Research on Parallel Computation (CRPC),
National Science Foundation and Science and Technology Center.