Turn one problem into a lesson you can drag
Paste a solid-geometry, conic-sections or chemistry problem. You get the worked solution step by step, next to a figure that moves: a 3D solid you can orbit, a conic board with a slider, or a reaction where the atoms rearrange. Your browser then re-derives the stated answer from that figure and tells you if the two disagree.
No lesson yet
Paste a problem on the left and build one — or open a bundled example to see the whole thing working, free.
- Solid geometry — line–plane angles, dihedral angles, skew lines, distances, volumes.
- Conic sections — chord lengths, dot-product ranges, fixed values, loci, eccentricity.
- Chemistry — combustion, redox, decomposition: what breaks, what forms, what is conserved.
How it works
- You paste a problem. The model solves it and returns a lesson object: the steps, the answer, and the figure as data — coordinates, constructions, atoms.
- Your browser draws it. Nothing is executed as code; the figure is rendered from that data, which is why the same lesson replays identically from a saved file.
- Your browser checks it. The angle is recomputed from the coordinates, the range is re-swept across the slider, the equation is re-balanced from the formulas. Disagreements are shown on the Check tab rather than hidden.