Light blocking experiment. What happens when you block light from a plant? Cut various shapes in aluminum foil and attach shapes to the leaf of a plant using paper clips. Leave the plant for a week and see what happens! The second part of this is coating the underside of a few leaves vaseline to starve it of carbon dioxide. This shows students carbon dioxide is also needed for photosynthesis and demonstrates effects similar to starving it of light.

This is a publicly available resource developed by the Little Green Thumbs program, a classroom gardening program. Learn more about the Little Green Thumbs program in your region.