See it move
Drag it, change it, and watch the idea respond.
Graphs, diagrams and simulations you drag and play with, drawn for the idea at hand.
The real thing, not a picture of it. Try it.
01
Over two hundred kinds of visual, from tangent lines to supply and demand to molecules in 3D, set up for the exact point being made.
02
Drag a point, change a number, add a tax. Seeing what changes, and what doesn’t, is where the understanding comes from.
03
Lessons give you something to do with each visual: a value to hit, a prediction to make, a pattern to spot.