Have a series of cards: timelines (1 year, 5 years, 100 years, 1 million years), etc, and materials (glass jar, plastic grocery bag, etc). Match the item to the year.
| item | time |
|---|---|
| oranges / banana peels | up to 2 years |
| cigarette butts | 1-5 years |
| leather and wool | 1-5 years |
| food wrappers | 5 years |
| tin cans | 50 years |
| aluminum cans | 80-100 years |
| disposable diapers | 450 years |
| monofilament fishing line | 600 years |
| glass bottles | 1 million years |
| plastic and styrofoam | studies vary but they break into tiny pieces |
burning trash is also bad. fire scar, smoke, etc