A leaf s job is to make food for plants.
Leaves are green because they contain chlorophyll, the plant s food factory.
Using sunlight, the chlorophyll creates food for the plant during the spring and summer. In the fall, when there is less sunlight and cooler temperatures, trees do not need as much food so the chlorophyll factories break down and the other colors in the leaves show through. What you do 1. Collect a variety of fallen leaves. Find lots of different shapes, sizes and colors.