🦁
Kitimu says: "Plants are powered by sunlight — how cool is that? Today you're going to prove it by blocking the sun from part of a leaf and watching what happens. Science in action, right in your garden! Let's go, Cub!"
🎒 What You Need
A living plant with big leaves
Aluminium foil
Paper clips or tape
Your worksheet
Pencil & crayons
📋 How To Do It
Pick your leaf: Choose a healthy green leaf that's still attached to a plant. Make sure it gets plenty of sunlight during the day.
Cover half: Cut a piece of aluminium foil and wrap it tightly around one half of the leaf. Use tape or a paper clip to hold it in place. Leave the other half uncovered and exposed to sunlight.
Wait 3 days: Leave the leaf alone for 3 days. The plant will keep growing, but only the uncovered half can do photosynthesis. Check it each day and note any changes on your worksheet.
Reveal and compare: After 3 days, carefully remove the foil. Compare both halves — the covered part should look paler or yellowish because it couldn't make food without sunlight! The uncovered half stays green and healthy.
Sun vs shade survey: Now explore your garden or park. Find the sunniest spot and the shadiest spot. Compare the plants growing in each — which are taller? Greener? Which spot has more plants? Draw both areas on your worksheet.
Ranger Tip: The green colour in leaves comes from chlorophyll — the magical molecule that captures sunlight and turns it into food. No sun = no chlorophyll = no green!
Science Bonus: Plants in shady spots often grow bigger leaves to catch more light. Look for this pattern during your sun vs shade survey!
📸
Take a before-and-after photo of your foil leaf experiment and share it in the Junior Rangers WhatsApp group!