Through 3D animations and hands-on interactions, abstract geometry becomes intuitive and fun
Drag the slider to fold a 2D net into a 3D cube; click edges to see which sides meet after folding
Swing a right triangle or rectangle with your mouse and watch it rotate into a 3D cone or cylinder with magical particle effects
Rotate shapes around a center to trace arcs, set N mirror axes to generate a kaleidoscope, and compose symmetric flowers — three experiments to master rotation and symmetry
Build freely with cube blocks and switch between front/side/top views to see how 2D projections map to 3D solids
Explode 3D models like houses, rockets, robots and castles into parts; drag each solid to learn the features of cuboids, spheres, cylinders and cones
Build freely with 7 solid blocks — cube, sphere, cylinder, cone, triangular prism, square pyramid and ring; drag to place and rotate on three axes
Drop blocks into a translucent cup and watch the water rise to understand that displaced water volume equals the object's volume
Cut a cylinder into sectors and reassemble into a near-cuboid; drag pieces to intuitively understand the derivation of V=πr²h
Unroll a circumference into a line to prove C=πd, reassemble sectors to derive S=πr², and freely adjust sectors — three magical experiments to master circles
Set a translation vector to slide shapes, adjust the vector to "go home", and weave beautiful patterns with translation — three experiments to master translation