Explore

Paths by interest, not age

No exams, no grades — just the parts of science worth understanding, in 3D you can poke at.

Space & Gravity

Why the Moon doesn’t fall, how rockets reach Mars, and where three-body chaos begins.

Physics · AstronomyOrbits & GravityLaunch a moon, find escape velocity, fly a Hohmann transfer and watch three-body chaos.7 worlds · 42 lessons · kids version

Physics · AstronomySun, Earth & MoonTilt Earth to make the seasons, drag the Moon through its phases, line up real eclipses and read the time from a shadow.4 worlds · 16 lessons · kids version

The Human Body

Your organs as systems: what pumps, what filters, what happens when one stops.

Biology · GeneticsGeneticsCross parents, fill the Punnett square and meet the offspring in 3D.8 worlds · 52 lessons

Biology · AnatomyHuman BodyBuild body systems and bones, open a four-chamber heart, explore muscle movement and sections, breathe with a 3D chest and alveolus, follow a bite through the gut, fire a neuron, trace brain pathways, and slice a CT/MRI volume.19 worlds · 134 lessons · kids version

Forces & Machines

The physics under every ramp, lever, spring and car crash.

Physics · Electricity & MagnetismField LabMap magnetic and electric fields in 3D, grip a wire with the right-hand rule, push a magnet through a coil and build a motor.8 worlds · 34 lessons · kids version

Physics · MechanicsForces & MotionPredict where the ball lands, then let a real physics engine prove you right or wrong — ramps, collisions, pendulums and springs.12 worlds · 59 lessons · kids version

Engineering · RoboticsRobot Arm LabSteer three joints, solve a target position and discover why some points have two solutions—or none.3 worlds · 8 lessons

Engineering · PhysicsSimple MachinesLevers, gears and pulleys you can crank — feel mechanical advantage.7 worlds · 39 lessons · kids version

Maker & Arduino

From logic gates to code running on a board — no soldering iron required.

Math & AIAI LabWatch a neural network learn in 3D, then deploy it to a virtual Raspberry Pi.9 worlds · 37 lessons

Engineering · MakerElectronics & ArduinoWrite an Arduino sketch and run it on a 3D board — no hardware needed.18 worlds · 264 lessons

Engineering · CSLogic GatesWire gates into adders, flip-flops and memory.5 worlds · 38 lessons

Everyday Chemistry

The molecules in your coffee, your kitchen and your medicine cabinet.

ChemistryChemistry LabSnap atoms into real 3D molecules, balance equations and run reactions.6 worlds · 56 lessons · kids version

Chemistry · MaterialsCrystal LabBuild crystals, explore Brillouin zones and electronic bands, and rotate an X-ray diffraction pattern.9 worlds · 28 lessons

Chemistry · UniversityOrganic ChemistryRotate, flip and react 54 molecules in 3D — stereo, conformations, SN1/SN2.8 worlds · 49 lessons

Chemistry · PhysicsParticle LabOne box of particles: melt and boil it, prove the gas laws, speed up reactions and push an equilibrium around.5 worlds · 21 lessons · kids version

Planet Earth

Plates, volcanoes and earthquakes — the slow machine under your feet.

Earth Science · GeologyPlate TectonicsCollide plates, raise mountains, open rifts and tune magma until a volcano erupts.8 worlds · 56 lessons · kids version

Earth science · Water & cloudsWeather IslandShape a mountain, reverse the wind and follow moisture into clouds, rain shadows and passing fronts.4 worlds · 11 lessons · kids version

Light & Color

Lenses, rainbows and your own eyes: follow the ray and see why.

Physics · OpticsLight & OpticsBend real light rays with lenses, mirrors and prisms.6 worlds · 53 lessons · kids version

Sound & Music

Waves you can hear: pitch, harmony and why a chord sounds the way it does.

Physics · Sound & MusicSound & Music LabPlay a piano that names every interval, build chords and scales, then pull a sound apart into its harmonics and see the string vibrate.7 worlds · 63 lessons

Math & Patterns

Shapes, surfaces and chance — the maths you can turn over in your hands.

Math · APCalculus & ProbabilitySurfaces, tangents, Riemann sums and dice you can actually roll.7 worlds · 60 lessons

Physics · Quantum mechanicsQuantum LabExplore hydrogen clouds, quantum barriers, Bloch spheres and entangled pairs.4 worlds · 16 lessons

Math · GeometryShape LabFold nets into solids, pour cones into cylinders, find the diagonal of a box and slice a cone into curves.6 worlds · 22 lessons · kids version

Math · Linear algebraVector LabBuild vectors, turn dot products into projections and transform a cube with a matrix you can edit.7 worlds · 25 lessons

How Computers Work

From a single logic gate to a machine that learns.

Engineering · CSLogic GatesWire gates into adders, flip-flops and memory.5 worlds · 38 lessons

Codes & Secrets

Caesar to Enigma to the lock on your bank app — and how codes get broken.

Computer Science · CryptographyCodes & Ciphers LabTurn a cipher wheel, set up an Enigma, crack codes by counting letters, then break a toy RSA key.4 worlds · 20 lessons

See every lab →