On the bench · not built yet

Square Root Hunt

Squeeze the square root of 2 between closer and closer decimals on a zooming number line.

Nearby on the shelf

From a virus to the Milky Way: compare sizes in scientific notation on a slider through scales.

Design ski runs by slope; too steep crashes, too flat stalls. Rise over run becomes a feel.

Two trains, two equations, one graph; drag speeds and start times to see where (and if) they meet.