Sage the Owl
Hoo there! I'm Sage, the old forest owl. I've watched over the giant oak for as long as I can remember.
Nobody knows exactly how old it really is — that's our first mystery to crack together.
How old is the giant?
Angel Oak is a Southern live oak on Johns Island. The City of Charleston estimates that it is 300–400 years old. A good scientist can tell an estimate from an exact measurement.
Height
About 65 feet tall, according to the City of Charleston.
Around its trunk
About 25.5 feet in circumference. Circumference means distance all the way around.
The shade
Its branches cover about 17,000 square feet of ground with shade.
Its birthday?
Its age is estimated, not an exact birthday. We cannot know the precise year it sprouted.
Tap a card, then tap the bin it belongs in: Estimate or Exact Measurement.
Rivet the Snake
Ssssup! I'm Rivet — I bask on the low branches every morning.
I've always wondered... how does this huge tree get enough food to grow so big?
Where does a tree's food come from?
A tree needs water, nutrients, and energy. But soil is not its lunchbox: leaves make sugars using sunlight, water, and carbon dioxide from air. This process is called photosynthesis.
Roots
Anchor the tree and absorb water and minerals from soil.
Trunk
Supports the canopy. Xylem carries water; phloem moves sugars to other parts.
Leaves
Use sunlight's energy to make sugar from water and carbon dioxide. Oxygen is released along the way.
Water's journey
As water evaporates from leaves (transpiration), it helps pull more water upward through xylem.
Tap the ONE part of the tree that uses sunlight to make sugar.
Comet the Unicorn (Imaginary example)
Imaginary example: Comet the unicorn trotted in from a story, not real life, to help count things.
Comet loves numbers almost as much as sparkly hooves. Let's measure the giant tree together!
Can numbers describe a giant?
We use measurements, estimates, multiplication, and subtraction to understand the world. Keep scratch paper nearby. The real Angel Oak measurements come from the City of Charleston; imaginary examples are clearly labeled.
Many trees form roughly one growth ring each year. Ring patterns can reveal growing conditions, but counting rings in a picture does not prove Angel Oak's exact age.
Sage the Owl
Sage here again. This tree isn't just wood and leaves — it's a whole tiny neighborhood.
Moss, ferns, birds, and bugs all live here. What happens to them if something changes?
What happens if a habitat changes?
An oak tree is more than one organism. It provides places where birds, insects, ferns, and other living things may find shelter. Some organisms benefit if conditions change, while others may struggle.
Spanish moss
A flowering air plant, not a true moss. It uses branches for support and collects water and nutrients from rain and air. It is not a parasite.
Resurrection fern
Grows on branches, curls and turns brown during dry spells, and can turn green again after rain. It does not steal food from the oak.
Birds and insects
Branches can offer nesting spots, hiding places, and a place to find insects to eat.
Lichens
Many lichens are partnerships between a fungus and an alga or cyanobacterium. They can grow on bark without feeding on the tree.
Rivet the Snake
Rivet again! I love water — it keeps my scales nice and cool.
Let's find out how a tree pulls water all the way up to its highest leaves.
Can water climb uphill?
A paper towel can draw water upward through narrow spaces by capillary action. Tall trees also depend on transpiration: water evaporating from leaves helps pull more water up through xylem. A paper towel models one part of the story, not the entire tree.
Predict
Place 2–3 cm of water in a glass. Predict what happens when just the end of the towel touches it.
Observe
Dip the bottom of a dry towel. Look after 30 seconds and again after 2 minutes. If you have a ruler, estimate how high the wet patch reaches above the waterline.
Reason
Water sticks to fibers (adhesion) and to other water molecules (cohesion). Compare the evidence with your prediction.
Tap two items to swap them until they're in the order they'd really happen, then check your order.
Sort each statement: True about this experiment, or Not quite right.
Clover the Horse
Neigh! I'm Clover. I love a good trail — and Angel Oak Park has one of the best.
Let's pack your field guide before we trot out to see the real tree.
Build a field guide. Test a claim.
A scientist brings questions outside instead of deciding the answers beforehand. Draw a model, predict what you'll observe, and bring your field guide with you.
Tap exactly THREE things you want to investigate at the real park.
Observe, measure, and compare. Respect the tree.
Sage the Owl
Hoo-ray! You've collected every forest token.
Now go test your thinking at the real tree, then come tell me what you found.
Certified Oak Investigator
You've practiced making predictions, analyzing evidence, calculating with real data, and comparing habitats. Now test your thinking in the field.