SPACE
✓ DoneMoon Phases Explorer
Move the Moon around Earth and watch its shape change night by night.
Explore
All learning simulators
Find your next discovery: 153 activities for Class 3–10. Choose a topic, a class or just something new.
SPACE
✓ DoneSolar System Orbit Explorer
Speed up time and watch eight planets race around the Sun.
SCIENCE
✓ DoneRainbow and Light Refraction Lab
Bend a beam of light through water, glass or diamond and split it into colours.
SCIENCE
✓ DonePlant Growth Conditions Lab
Give a seedling sun, water and warmth, then find the perfect mix.
SCIENCE
✓ DoneFloat or Sink Density Lab
Drop objects into water, oil or honey and discover why some float.
SCIENCE
✓ DoneSimple Circuit Builder
Connect batteries, bulbs and a switch, then see what glows.
EARTH
✓ DoneWater Cycle Explorer
Heat the sea, grow a cloud and make it rain: the same water, round and round.
EARTH
✓ DoneWeather Maker
Mix temperature, humidity, pressure and wind to cook up today’s weather.
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.
SCIENCE
✓ DoneDigestion Journey
Follow a bite of food from the mouth to the end of the gut.
MATHS
✓ DoneFractions Pizza & Shape Visualizer
Slice a pizza, colour the pieces and see fractions, decimals and percents match up.
MATHS
✓ DoneGeometry Area and Perimeter Builder
Stretch rectangles, triangles and circles on a grid and watch area and perimeter change.
MATHS
✓ DoneProbability Playground
Flip coins, roll dice and spin spinners hundreds of times, then compare with the maths.
MATHS
✓ DoneData and Graph Explorer
Change the numbers and watch bar, line and pie charts redraw, plus mean, median and mode.
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.
MATHS
✓ DoneMultiplication & Division Playground
Build multiplication arrays and share candies into equal groups to see where remainders come from.
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
✓ DoneLevers and Moments: Balance the Beam
Slide weights along a beam until the clockwise and anticlockwise turns cancel.
SCIENCE
✓ DoneSound Waves: See Pitch and Loudness
Change the frequency and amplitude of a tone and watch the wave change shape.
SCIENCE
✓ DoneMagnetic Fields: Follow the Compass
Move a bar magnet and watch a grid of compass needles swing to follow the field.
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
✓ DoneNegative Numbers: Travel Across Zero
Move two markers on a number line and compare values above and below zero.
MATHS
✓ DoneCoordinate Geometry: Find the Hidden Point
Plot points in all four quadrants and hunt for a hidden pair of coordinates.
MATHS
✓ DoneGeometric Transformations: Move, Flip and Turn
Translate, reflect, rotate and dilate a shape and read the coordinate rule.
MATHS
✓ Done3D Shapes and Nets: Fold a Flat Pattern
Fold a flat net into a solid and test which arrangements really close up.
MATHS
✓ DonePythagorean Theorem: Discover the Missing Side
Stretch a right triangle and watch the two smaller squares add up to the biggest.
MATHS
✓ DoneTriangle Angles: Discover the 180° Rule
Drag the corners of a triangle and watch the three angles always total 180 degrees.
SPACE
✓ DoneDay, Night and Seasons: Discover Earth’s Tilt
Change the tilt, the date and your latitude and watch the daylight hours change.
EARTH
✓ DoneRiver Erosion: Watch Water Shape the Land
Change the flow and the sediment supply and watch a meander grow year by year.
EARTH
✓ DoneRock Cycle: Change a Rock’s Story
Apply heat, pressure, weathering and melting to send a rock around the cycle.
TECHNOLOGY
✓ DoneCoding Loops and Conditions: Guide the Robot
Build a program from moves, turns, loops and conditions to reach the star.
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
✓ DoneMeteor or Meteorite? Will the Rock Reach the Ground?
Set a rock’s size, speed, angle and material, drop it through the air and predict whether it burns up or lands.
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
✓ DoneTide Lab: Two High Tides a Day, Spring and Neap
Turn the Earth under the Moon’s two bulges, move the Moon round its orbit and watch the tide at your town swing from spring to neap.
EARTH
✓ DoneSoil Detective: Sand, Silt, Clay and Water
Mix sand, silt and clay, pour water on your soil and see how fast it soaks in, how much stays, and whether a plant would thrive.
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
✓ DoneCompost Lab: Turn Waste into Soil
Mix greens and browns, set the moisture and turning, and see how many days your heap takes to become compost, or whether it turns smelly.
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.
MATHS
✓ DoneSolid Detectives
Compare a cube and a triangular prism. Count hidden edges too.
MATHS
✓ DoneNet Workshop
Move a flap. Predict whether two faces will overlap, then test.
MATHS
✓ DoneLittle Architects
Build the skyline, then compare the total with the sum of its column heights.
MATHS
✓ DoneShape Sketches
Draw the missing sides, then name the flat faces you can see.
MATHS
✓ DoneDesk Detectives
Use the printed row and column labels rather than guessing the starting corner.
MATHS
✓ DoneView Voyagers
Change the viewing direction and compare the silhouettes.
MATHS
✓ DoneTreasure Steps
Find the treasure, then explain your route with left, right, up and down.
MATHS
✓ DoneRoute Sketcher
Trace each leg from its start dot to its destination.
MATHS
✓ DonePattern Parade
Fill the gap, then invent a pattern with a different three-part unit.
MATHS
✓ DonePair Picnic
Pair the counters and use the leftover to decide.
MATHS
✓ DoneNumber Fireflies
Try a rising trail and a falling trail, explaining the step each time.
MATHS
✓ DonePattern Pencil
Complete the missing motif, then try a different border on paper.
MATHS
✓ DonePlace-Value Port
Turn the digit wheels to match the blocks, expanded form or number name.
MATHS
✓ DoneNumber Mountain
Pick all the cards in order, using place value to explain each choice.
MATHS
✓ DoneNumber-Line Landing
Move the marker to the target and compare distances to both neighbours.
MATHS
✓ DoneBundle Pencil
Enclose each complete row of ten; leave the loose ones outside.
MATHS
✓ DoneFraction Garden
Shade a fraction, then show the same amount using more equal pieces.
MATHS
✓ DoneFair-Share Feast
Give one item to each child in turn, then check that the shares match.
MATHS
✓ DoneFraction Bridges
Compare equal-length bars, then look for fractions that cover equal lengths.
MATHS
✓ DoneFair-Cut Doodles
Draw the required centre cuts and count the equal pieces.
MATHS
✓ DoneRuler Rangers
Move the end of the ribbon to make the requested model length.
MATHS
✓ DoneRibbon Rally
Order the ribbons, checking whether each label uses metres or centimetres.
MATHS
✓ DoneFence Walk
Trace the boundary and record the running length before choosing the total.
MATHS
✓ DoneMeasure Pencil
Draw a straight segment of the requested length from the start dot.
MATHS
✓ DoneMarket Moments
Read the price tags, work out the change and build it with coins.
MATHS
✓ DoneVillage Number Works
Estimate to the nearest ten, then build the exact answer with place-value wheels.
MATHS
✓ DoneNumber-Pair Bridge
Join a number to its partner so the pair reaches the bridge target.
MATHS
✓ DoneJump Sketches
Trace the two jumps and read the finishing number.
MATHS
✓ DoneBalance Bazaar
Add and remove labelled weights until the beam is level.
MATHS
✓ DonePour Patrol
Try reaching the same target with different cup sizes.
MATHS
✓ DoneMeasure Match
Choose the comparison sign after expressing both labels in one unit.
MATHS
✓ DoneJug Pencil
Draw a horizontal water level at the requested mark.
MATHS
✓ DoneArray Orchard
Set rows and columns to satisfy both the row clue and total.
MATHS
✓ DoneAnimal Hops
Choose a step size, hop repeatedly and check that you land exactly.
MATHS
✓ DoneSharing Boats
Make full groups, leave the remainder outside and check total = groups × size + remainder.
MATHS
✓ DoneGrouping Pencil
Draw separate boundaries around the equal groups.
MATHS
✓ DoneWildlife Counts
Use the two labelled counts to find a total or difference, then check your estimate.
MATHS
✓ DoneTarget Trail
Take turns with the forest friend and try to reach the target exactly.
MATHS
✓ DoneNumber Tracks
Order the animal-count cards and explain the gap between neighbours.
MATHS
✓ DoneDifference Doodles
Join the two count markers and read the gap in equal intervals.
MATHS
✓ DoneMirror Garden
Copy the coloured cells across the mirror without shifting them up or down.
MATHS
✓ DoneSymmetry Scouts
Select every valid fold line and test the overlap.
MATHS
✓ DoneTile Turners
Turn each square until the decorative corners follow the target pattern.
MATHS
✓ DoneMirror Pencil
Complete the outline across the dashed mirror.
MATHS
✓ DoneClockwork Trail
Move both hands by changing time, and match the digital target.
MATHS
✓ DoneCalendar Quest
Find a date after a given number of days, using weekday headings as a check.
MATHS
✓ DoneTime Travellers
Advance the clock by the given duration, including crossings into the next hour.
MATHS
✓ DoneClock Pencil
Draw the short hour hand and the long minute hand to the target time.
MATHS
✓ DoneRoute Racers
Choose a route, add its distance and compare it with the other path.
MATHS
✓ DoneCoach Constructors
Set the total seats using the split coach groups as a guide.
MATHS
✓ DoneAll Aboard
Add enough coaches for everyone and check that one fewer would be insufficient.
MATHS
✓ DoneMuseum Map Pencil
Trace the marked route legs and compare their total with the alternative.
MATHS
✓ DoneSurvey Station
Read each response once and send it to the correct tally column.
MATHS
✓ DonePicture Picnic
Read the key first, then compare totals or find a difference.
MATHS
✓ DoneBar-Graph Builders
Build every bar to match the frequency table, then identify most and least.
MATHS
✓ DoneChart Pencil
Draw each bar from its baseline to the table value.
MATHS
✓ DoneLoop Lagoon
Tap different pegs to add sides. To close your shape, tap the first peg again. Avoid crossing sides.
MATHS
✓ DoneJelly Joint
Slide or drag the top joint until your solid shape sits on the dotted outline.
MATHS
✓ DoneAngle Twins
Look between the two arms, not at their lengths. The curved mark shows the opening to compare.
MATHS
✓ DoneStick Studio
Tap an orange stick, then an empty dashed place. Keep the green sticks where they are.
MATHS
✓ DoneAngle Inspector
Move the tester arm to cover the pale target arm. The pivot and the first arm already line up.
MATHS
✓ DoneCorner Carnival
Pick a paint label, then tap a marked corner. Use the little square as the right-angle reference.
MATHS
✓ DoneFold & Fly
Tap Fold to make the creases. Then choose the marked opening requested in the mission.
MATHS
✓ DoneRobot Yoga
Move the glowing hand or the slider. Measure the marked opening at the elbow.
MATHS
✓ DoneBee Line
Turn the dotted flight path toward the flower, then send the bee. The sun ray is the starting direction.
MATHS
✓ DoneLetter Detectives
Only the circled, marked corners count in this game. Tap every one in the requested family.
MATHS
✓ DoneRamp Racers
Adjust your ramp to the mission. Race both equal-length ramps and observe which ball reaches the end first.
MATHS
✓ DoneBridge Builders
Add one diagonal to each unbraced bay. Then test your bridge against the wind.
MATHS
✓ DoneTick Tock Trail
Move the time control to match the mission. Compare the smaller marked opening between the hands.
MATHS
✓ DoneCarrom Comets
Set where the striker meets the top cushion. Imagine an equally slanting path on the other side.
MATHS
✓ DoneDegree Orbit
Start at the zero ray and turn anticlockwise. Use the slider, plus/minus buttons or the movable hand.
MATHS
✓ DoneThe Doodle D Game
Compare with 45°, 90° and 180°. Make your guess before revealing the protractor.
SCIENCE
✓ DonePaint Mixer
Squeeze red, yellow, blue and white paint into a bowl and see what colour you make.
SCIENCE
✓ DoneMatch the Colour
Mix paint drop by drop to match the colour on the card, across 50 levels.
SCIENCE
✓ DoneHide the Chameleon
Paint a chameleon so a hungry bird cannot spot it, then make it stand out for a friend.
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