Interactive science & computing · free, in your browser
Labs you can touch.
Interactive, visual experiments for physics, chemistry, biology, and computer science. No lecture first — drag things, break things, and figure out why.
Physics
Motion, forces, fields, and waves — systems you can drag, release, and watch respond.
30 interactive labsChemistry
Particles, reactions, and states of matter changing right in front of you.
30 interactive labsBiology
Cells, bodies, and ecosystems you can grow, feed, and disturb.
30 interactive labsComputer Science
Algorithms and machines you can step through one visual move at a time.
30 interactive labsMathematics
Numbers, shapes, and change you can bend, plot, and play with.
32 interactive labsGeography
Earth's surface, systems, and maps you can explore and reshape.
30 interactive labsHistory
Empires, trade, and ideas unfolding across animated maps and timelines.
22 interactive labsAstronomy
Planets, stars, and the whole sky — set in motion and to scale.
21 interactive labs