Don't just read about it. Try it.
Hands-on activities in maths, science, space, money, coding and online safety. Move the fractions, launch a rocket, spot the scam, train a neural network. No sign-up, and it works on any phone.
4 to play now · 36 more coming soon · 11 labs
Maths Lab
Fractions, shapes and equations you can move.
Fraction Builder
Cut a bar or a circle into equal parts, shade them, and see why 1/3 is bigger than 1/4.
Play →Balance the Scale
Solve equations by keeping a scale balanced.
3D Shapes and Nets
Rotate solids, count faces and edges, and unfold them into nets.
Science Lab
Circuits, space and plants, as experiments.
Simple Circuits
Build a circuit with a battery, wires, bulbs and a switch, and see why two bulbs in a row are dimmer.
Play →Solar System and Seasons
Compare the planets and tilt the Earth to make the seasons.
How Plants Make Food
Change light, water and air, and see what a leaf makes.
Balance a Chemical Reaction
Add molecules to each side until every atom matches, from making water to photosynthesis.
AI & Coding Lab
Teach a computer, program a robot.
Teach a Computer
Teach a computer mangoes from bananas, test it, and find out why unfair examples make it wrong.
Play →Robot Maze
Program a robot step by step, use loops, and fix the bugs.
How Does AI Write?
Watch a tiny AI guess the next word, turn up its creativity, and catch it being confidently wrong.
Neural Network Playground
Train a real tiny neural network in your browser and watch it learn to sort dots, from a straight line to a circle.
AI or Human?
Can you tell a real photo from an AI-made one? Guess six pairs, then learn why checking the source beats looking.
Prompt Challenge
Build prompts for a pretend AI and see how the answer changes. Then catch it making something up.
Brain Gym
Patterns, puzzles and spatial thinking.
Pattern Detective
Find the rule in shape and number patterns, then make a pattern for a friend.
Play →Shape Rotation
Turn and flip shapes in your head, then check.
Infinity Explorer
Eat halves of a cake forever, find room in a full infinite hotel, and see why 0.999… is exactly 1.
Money Lab
How money, mining and blockchains really work.
Mine Your First Block
Guess and guess until the hash starts with zeros: see why Bitcoin mining takes so much work.
Build a Blockchain
Change one old block and watch the whole chain break. Then try to fix it.
Become a Millionaire?
Save a little every month and watch compound interest turn it into ₹10 lakh, then see what rising prices do to it.
Stock Market Simulator
Invest pretend money in made-up companies, live through 10 years and a crash, and learn why spreading out matters.
Cyber Safety Lab
Spot scams, make strong passwords, stay safe online.
Phishing Detective
Spot the tricks in fake bank SMS, UPI requests and emails before they fool you.
Password Strength Lab
How long would a hacker take to guess it? Test made-up passwords and build a strong one.
Secret Message
Turn a cipher wheel to lock and unlock secret messages, then crack a spy code by counting letters.
How the Internet Works
Send a message as numbered packets across a network, cut a cable, and watch the routers find another way.
How Search Works
Send a crawler through a tiny made-up web, build an index, search it, and stop a spam page from cheating its way to the top.
Space Lab
Black holes, gravity and the universe.
Black Hole Explorer
Squash the Earth into a black hole the size of a marble, and watch light bend and fall in.
Launch a Rocket
Build a rocket from fuel, engines and stages, launch it, and find out why reaching orbit is so hard.
Build Your Own Solar System
Give a planet a push and watch gravity bend it into an orbit, a crash into the star, or an escape into space.
Life on Mars
Pack 8 tonnes of cargo for 4 astronauts who must live 500 days on Mars. Survive a dust storm.
Travel at Light Speed?
Fly one twin to a star near light speed and back, and see who comes home younger.
Body & Life Lab
Hearts, brains, DNA and living things.
Control a Heart
Make the body sleep, walk or sprint and watch the heart, lungs and blood keep up, then take control of the heart yourself.
Design an Ecosystem
Run a forest of grass, deer and tigers for 50 years and see what happens when you take one away.
Build a DNA Molecule
Pair A with T and C with G to build DNA, read a gene three letters at a time, and find the one-letter change behind sickle cell disease.
Explore Your Brain
Tap the parts of the brain to see what each one does, then test your reaction time with and without distractions.
Earth & Climate Lab
Weather, earthquakes and clean energy.
Make the Weather
Warm the sea, lift the air and watch it cool into clouds and rain, then see why the coast gets more rain than inland.
Earthquake Shake Table
Build towers, shake the ground fast or slow, and discover why the building in most danger is not always the tallest.
Clean Energy Mix
Power a city for a day with solar, wind, hydro, coal and batteries. Keep the lights on and cut pollution.
Create & Business Lab
Run a shop, design a game, make decisions.
Start a Virtual Shop
Run a samosa stall for a week: set the price, plan for the weather, and find out what profit really means.
Design Your Own Game
Tune the jump, gravity, speed and walls of a one-button game until it is hard but fair. Then play it.
Robotics & Engineering Lab
Bridges, machines and robots.
Build a Bridge
Add beams over a river, drive a truck across, and see which beams get squeezed or stretched, and which snap.
Explore is free and needs no account. We don't show ads to students, and we don't track them. Progress is saved only on your own device.