All playgrounds
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Ages 5–7
Shape Sorter
Build the rocket. You only get shapes that fit.
Start playing →Ages 5–7
Stack It Up
How tall can you build it before it falls over?
Start playing →Ages 5–7
Seed Wake-Up
What does this sleeping seed need?
Start playing →Ages 5–7
Pattern Parade
What number comes next in the parade?
Start playing →Ages 5–7
Sunshade Workshop
Can you keep the puppy in the shade?
Start playing →Ages 5–7
Melt & Freeze
Make the ice into water. Then make it ice again.
Start playing →Ages 7–11
Log Flip
Flip the log. Twenty things live under it — can you sort them?
Start playing →Ages 7–12
Array Builder
You have 24 tiles. How many different rectangles can you make?
Start playing →Ages 7–12
Lever Lab
The grown-up weighs three times as much. Where can the child sit to balance them?
Start playing →Ages 8–13
Density Tower
Can you stack liquids like a cake?
Start playing →Ages 8–13
Who Eats Whom
Take one animal away. What happens to all the others?
Start playing →Ages 8–13
Place Value Zoom
Multiply by ten. Watch which way the digits move.
Start playing →Ages 8–13
Ramp & Slide
Same sled, same hill. So why does one stop sooner?
Start playing →Ages 8–10
Chance Machine
Why do ten drops and a thousand drops look different?
Start playing →Ages 8–10
Bumper Test
How can a car stop without crushing its passenger?
Start playing →Ages 11–13
Spring Launcher
How far should you squeeze this spring?
Start playing →Ages 7–12
Kitchen Chemistry
Mix things from the kitchen. Which ones fizz, foam and change colour?
Have a read →Ages 8–10
Ink River
Can one black mark hide three colors?
Start playing →Ages 11–13
Temperature Translator
Is zero degrees always cold?
Start playing →Ages 8–13
Cell City
Everything in here has a job. What breaks if you take one out?
Start playing →Ages 7–12
Tile Floor
Cover the floor. No gaps, no overlaps.
Start playing →Ages 8–13
Bridge Build
Build a bridge. Then drive a lorry over it.
Start playing →Ages 8–13
Particle Party
What are these tiny dots doing when nobody's watching?
Start playing →Ages 9–13
Osmosis Pool
The cell is drinking. Can you stop it before it bursts?
Start playing →Ages 7–12
Mirror Fold
Where do you put the mirror so the two halves match?
Start playing →Ages 7–13
Tower Wobble
The ground is about to shake. Build something that survives.
Start playing →Ages 8–13
Atom Builder
Build me a carbon atom. Then break it.
Start playing →Ages 8–13
Angle Ranger
Steer the rover. You only say how far to turn.
Start playing →Ages 8–10
Microscope Focus
What is hiding in this blurry drop?
Start playing →Ages 11–13
Molecule Chains
Can changing one link change a whole chain?
Start playing →Ages 8–10
Perimeter Pen
Can the same fence hold more garden?
Start playing →Ages 11–13
Division Clock
When is a cell ready to split?
Start playing →Ages 8–10
Net Folder
Which flat shape folds into a box?
Start playing →Ages 11–13
Earthquake Base
Can a soft base save a rigid building?
Start playing →Ages 11–13
Isotope Hourglass
When does half become half again?
Start playing →Ages 11–13
Ionization Tug
Which atom lets go of an electron first?
Start playing →Ages 9–13
Leaf Machine
Sunlight goes in. What comes out?
Start playing →Ages 8–13
Gear Train
Turn this little wheel. Make that big one crawl.
Start playing →Ages 8–13
Heart Pump
Keep this person alive while they run for a bus.
Start playing →Ages 7–12
Fraction Kitchen
Three children, two chocolate bars. Cut it fairly.
Start playing →Ages 9–13
Pulley Pull
Lift the heavy crate with one hand.
Start playing →Ages 10–13
Bond Forge
Some atoms share. Some atoms steal. Which is which?
Start playing →Ages 10–13
Octet Puzzler
Every atom wants a full outer ring. Can you make everyone happy?
Start playing →Ages 11–13
Feedback Thermostat
Can a body cool itself without your help?
Start playing →Ages 8–10
Ratio Kitchen
Can you double a recipe without changing its taste?
Start playing →Ages 11–13
Wind Turbine Bench
Which blades make the brightest lamp?
Start playing →Ages 11–13
Breath to Energy
Where does the sugar go when muscles run?
Start playing →Ages 8–10
Fraction Line
Can one half land on the same spot as two fourths?
Start playing →Ages 11–13
Robot Arm Reach
Can a tiny motor lift a heavy box?
Start playing →Ages 11–13
Percent Tank
What does a 25 percent fill look like?
Start playing →Ages 10–13
Build a Molecule
Every atom has arms. Join them up and see what you have made.
Have a read →Ages 11–13
Formula Foundry
How many ions make this compound neutral?
Start playing →Ages 8–10
Crystal Seed
Can you grow a crystal without changing its shape?
Start playing →Ages 10–13
Trait Lab
Two black mice. Why is one of the babies brown?
Start playing →Ages 9–13
Balance Scale
Take the same thing off both sides. Keep it level.
Start playing →Ages 7–12
Boat Hull
This lump of clay sinks. Make it float.
Start playing →Ages 11–13
Codon Kitchen
This is a recipe, three letters at a time. Cook it.
Start playing →Ages 10–13
Graph Racer
Fly through all five gates. You only get two numbers.
Start playing →Ages 9–13
Catapult
The target is far away. What angle do you fire at?
Start playing →Ages 11–13
Meiosis Mixer
Why are two siblings never exactly the same?
Start playing →Ages 8–10
Plane Lab
Can one folded wing fly farther?
Start playing →Ages 11–13
Scale-Map Rescue
How far is the shelter on this tiny map?
Start playing →Ages 8–10
Mirror Maze
Can you bounce light around the corner?
Start playing →Ages 11–13
Function Machine
What rule turns every input into its output?
Start playing →Ages 9–13
Beak Island
Feed the birds for twenty years. What is left?
Start playing →Ages 9–13
Data Detective
Add one enormous number. Which average moves?
Start playing →Ages 9–13
Circuit Bench
One bulb is bright. Add another and both go dim. Why?
Start playing →Ages 9–13
Gas Lab
Squeeze the balloon. Where does the pressure come from?
Start playing →Ages 9–13
Solubility Sea
How much salt can one glass of water hold? What if it's hot?
Start playing →Ages 11–13
Carbon Loop
Where does carbon go when a forest disappears?
Start playing →Ages 8–13
Rate Racer
Three identical tablets. Make yours fizz out first.
Start playing →Ages 8–10
Kelp Shelter
How many creatures can a kelp forest shelter?
Start playing →Ages 5–7
Magnet Sorter
Which objects will your magnet pick up?
Start playing →Ages 11–13
Population Ceiling
Can a population grow forever?
Start playing →Ages 11–13
Scatter Story
Does a trend survive one strange point?
Start playing →Ages 11–13
Heat Sink Builder
Can you cool this chip before it slows down?
Start playing →Ages 11–13
Concentration Mixer
Can more water make the same drink weaker?
Start playing →Ages 11–13
Equilibrium Seesaw
Can both sides keep changing while the level stays still?
Start playing →Ages 11–13
Acid Dropper
How many drops change a tenfold scale?
Start playing →Ages 11–13
Gas Balloon
What happens to a balloon when the air warms?
Start playing →12 more playgrounds are being built.