SCIENCE
✓ DoneRainbow and Light Refraction Lab
Bend a beam of light through water, glass or diamond and split it into colours.
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Class 9 simulators
53 activities matched to your class. Choose a topic and try something new.
Projectile motion, atoms, pH, genetics, Pythagoras, plate tectonics and clean energy.
By subject: Science (16), Maths (4), Space (9), Earth (10), Technology (4), Environment (10).
EARTH
✓ DoneEarthquake and Plate Tectonics Explorer
Push tectonic plates together, apart or past each other until the ground shakes.
ENVIRONMENT
✓ DoneFood Chain Balance Simulator
Grass, rabbits and foxes: change one and watch the whole chain wobble.
SCIENCE
✓ DonePhotosynthesis Lab
Feed a leaf light, carbon dioxide and warmth and count the oxygen bubbles.
MATHS
✓ DoneProbability Playground
Flip coins, roll dice and spin spinners hundreds of times, then compare with the maths.
TECHNOLOGY
✓ DoneSecret Code and Encryption Playground
Scramble messages with Caesar, Atbash and keyword ciphers, then crack them.
TECHNOLOGY
✓ DoneAI Pattern Recognition Demo
Teach a tiny AI to tell shapes apart by drawing examples, then test it.
ENVIRONMENT
✓ DoneCarbon Footprint Calculator
Adjust travel, electricity, food and shopping to see your yearly CO₂, and how to shrink it.
ENVIRONMENT
✓ DoneRenewable Energy City Planner
Power a growing city with solar, wind, hydro and coal, balancing cost, pollution and blackouts.
SCIENCE
✓ DoneForce and Friction: Push, Slide and Stop
Push a block across ice, wood, concrete or rubber and watch the force arrows fight it out.
SCIENCE
✓ DoneProjectile Motion: Aim the Perfect Throw
Set the speed and angle, launch the ball and try to land it on the flag.
SCIENCE
✓ DoneKinetic and Potential Energy: Build a Coaster
Design a coaster track, release the cart and watch energy change form.
SCIENCE
✓ DoneSound Waves: See Pitch and Loudness
Change the frequency and amplitude of a tone and watch the wave change shape.
SCIENCE
✓ DoneWater Pressure: Explore Below the Surface
Lower a gauge into a tank and watch pressure climb with depth, not with width.
SCIENCE
✓ DoneHeat Transfer: Track Hot and Cold
Touch a hot block to a cold one and watch energy flow until they match.
SCIENCE
✓ DoneAtomic Structure: Make Elements from Particles
Add protons, neutrons and electrons and see which element and ion you have built.
SCIENCE
✓ DoneBalancing Chemical Equations: Match Every Atom
Adjust the coefficients until every element has the same count on both sides.
SCIENCE
✓ DoneAcids, Bases and pH: Test Virtual Liquids
Test everyday liquids with indicators and watch what water does to the pH.
SCIENCE
✓ DoneSolutions and Solubility: How Much Will Dissolve?
Stir solute into water and find the point where no more will dissolve.
SCIENCE
✓ DoneSeparation of Mixtures: Choose the Right Method
Pick the right method for each mixture and split it into pure substances.
SCIENCE
✓ DoneBlood Circulation: Trace a Heartbeat
Follow a red blood cell through the heart, the lungs and the body, twice per lap.
SCIENCE
✓ DoneLungs and Breathing: Follow Oxygen Inside
Move the diaphragm yourself and watch air rush in and out of the lungs.
SCIENCE
✓ DoneGenetics and Inheritance: Predict Pea Plant Traits
Choose two parent plants, fill a Punnett square and grow the offspring.
MATHS
✓ DoneLinear Equations: Keep Both Sides Equal
Do the same thing to both sides of a balance until x stands alone.
MATHS
✓ DoneGeometric Transformations: Move, Flip and Turn
Translate, reflect, rotate and dilate a shape and read the coordinate rule.
MATHS
✓ DonePythagorean Theorem: Discover the Missing Side
Stretch a right triangle and watch the two smaller squares add up to the biggest.
EARTH
✓ DoneRiver Erosion: Watch Water Shape the Land
Change the flow and the sediment supply and watch a meander grow year by year.
TECHNOLOGY
✓ DoneBinary Numbers: Count with Zero and One
Flip eight lamps on and off and read the decimal number they spell out.
TECHNOLOGY
✓ DoneLogic Gates: Make a Digital Decision
Flip the input switches and follow the 0s and 1s through AND, OR and NOT gates.
SPACE
✓ DoneLunar Landing Challenge: Touch Down Softly
Fly a lander down to the Moon, working the throttle so you touch down under 3 m/s with fuel to spare.
SPACE
✓ DoneEclipse Shadow Lab: Solar and Lunar Eclipses
Move the Moon round its tilted orbit and see exactly when its shadow reaches Earth, and when Earth’s shadow reaches it.
SPACE
✓ DoneExoplanet Detective: Find Planets from a Dip in Starlight
Watch a star’s brightness, spot the dips, and work out how big the hidden planet is and how long its year lasts.
SPACE
✓ DoneStar Life Cycle: From Nebula to Black Hole
Pick a star’s mass, age it through its life and see whether it ends as a white dwarf, a neutron star or a black hole.
SPACE
✓ DoneComet Orbit and Tail Lab: Why the Tail Points Away
Stretch a comet’s orbit, fly it past the Sun and watch it speed up, grow a tail and always point that tail away from the Sun.
SPACE
✓ DoneImpact Crater Lab: How Big a Hole Does a Rock Make?
Choose a rock’s size, speed and material, drop it, and measure the crater against a football pitch, a city or Chicxulub.
SPACE
✓ DoneSatellite Orbit Lab: Why the Space Station Never Falls Down
Fire a projectile sideways from a mountain: too slow and it falls, fast enough and it orbits, faster still and it escapes.
SPACE
✓ DoneSpace Station Life Support: Keep the Crew Breathing
Run a space station for 30 days: balance oxygen, carbon dioxide, water and solar power so the crew never runs short.
SPACE
✓ DoneRocket Launch Lab: Why Rockets Are Mostly Fuel
Design a rocket’s payload, propellant, engine and staging, launch it, and see whether it reaches orbital speed.
EARTH
✓ DoneGroundwater Explorer: Will the Well Run Dry?
Set the monsoon, the paving and the pumping, run the months and watch the water table rise and fall past your well.
EARTH
✓ DoneGlacier Time Machine: Advance, Retreat and Sea Level
Set the snowfall and the warming, run the years and watch a valley glacier grow or shrink, then read how much sea level the lost ice adds.
EARTH
✓ DoneOcean Current Explorer: Wind, Spin and the Great Loops
Turn the wind up, switch Earth’s spin on and off, and follow a drifting bottle round an ocean gyre while coastal thermometers change.
EARTH
✓ DoneFossil Formation Lab: From Seabed to Stone
Bury a dead fish, shell or jellyfish under sediment, set the oxygen and scavengers, and see whether anything survives to become a fossil.
EARTH
✓ DoneLandslide Lab: When Does a Slope Give Way?
Set the slope, the rain, the trees and a road cut, then watch the safety gauge and see the hillside slide when holding force loses to gravity.
EARTH
✓ DoneCave and Sinkhole Explorer: Water That Eats Rock
Send slightly acidic rain through limestone for thousands of years, watch a crack grow into a cave and see the roof fall in as a sinkhole.
EARTH
✓ DoneMonsoon Wind Machine: Why the Winds Reverse
Run the year on a coast, watch land and sea temperatures pull apart, and see the wind swing from land to sea and bring the rains.
EARTH
✓ DoneTsunami Wave Lab: Fast in the Deep, Tall at the Shore
Set off an undersea earthquake, follow the wave across the ocean and see it slow down and rear up as the water shallows toward the town.
ENVIRONMENT
✓ DoneFlood-Ready Town: Where Does the Storm Water Go?
Pave the town, dig drains, keep a wetland and raise the embankment, then hit it with a storm and count the houses that flood.
ENVIRONMENT
✓ DoneCool Your City: Beat the Urban Heat Island
Add trees, light roofs and ponds to a city and watch how much cooler it gets than the countryside, by day and at night.
ENVIRONMENT
✓ DoneClean Air Challenge: Read the AQI, Fix the Air
Turn the traffic, factories, stubble fires and dust up or down, add wind, rain or a winter inversion, and watch the PM2.5 and AQI respond hour by hour.
ENVIRONMENT
✓ DoneRescue the Lake: Nutrients, Algae and Oxygen
Let fertiliser and sewage into a lake, watch the algae bloom and the oxygen crash, then treat the sewage and see whether the fish survive.
ENVIRONMENT
✓ DoneDeforestation Lab: What a Hillside Loses with Its Trees
Clear or replant a hillside and read what changes: run-off, soil washed into the river, water reaching the ground and carbon stored.
ENVIRONMENT
✓ DoneStop Plastic Pollution: Follow the Plastic to the Sea
Set how much a town reduces, reuses, collects and recycles, run the years and watch how much plastic piles up in the sea.
ENVIRONMENT
✓ DoneAcid Rain Lab: Smoke, pH and the Taj Mahal
Burn coal, run traffic, fit scrubbers and converters, and read the pH of the rain and what it does to a marble statue, a lake and a forest.
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