To see what things biodegrade, try burying the following objects in separate holes in your garden.

Materials:

• Leafy twig
• Styrofoam cup or container
• An empty tin or aluminum can
• Newspaper
• A piece of cotton or wool fabric
• An empty glass bottle
• An apple core

Make sure you mark where the holes are so you can dig them up a month later. Make a note of what objects rot and those that do not. Discuss which objects can be recycled and how  waste can be avoided.