Tool category

Classroom tools

Seating, timers, groups, and probability demos for class.

55 browser tools Free — no accounts No installs, no tracking

Browse

4 items

/

Paste a roster, pick rows, pods or a U-shape, add constraints — keep these two apart, lock her to the front row — and shuffle until the chart works.

Run coins, dice, spinners, cards, urns and the birthday paradox — and watch empirical results converge to the exact theory in live charts.

A big, projector-friendly countdown and stopwatch for timing class activities and transitions.

Paste a roster and shuffle it into random, balanced groups — by group count or by group size.

Featured