Galton board: a bell curve from chance
Balls fall through rows of pegs and pile up in a bell shape. Hands-on probability and the normal distribution for kids 9+.
Interactive experiments for kids, students and teachers. Run each one right on the page, then open a copy in the Tymora editor and change mass, friction, elasticity or gravity. Every experiment comes with discussion questions and a version to try at home.
Balls fall through rows of pegs and pile up in a bell shape. Hands-on probability and the normal distribution for kids 9+.
Identical salt shakers stand on trays tilted 10°, 20° and 35°. Find the angle where static friction no longer holds.
A ball flies along a parabola toward the hoop. Tune the speed and angle; the sensor under the basket turns green on a score.
Nine wedge stones hold each other and a load on top. Remove the keystone and the arch collapses.
Weights of 0.5, 1 and 2 kg and one unknown hang on identical springs. A spring stretches in proportion to the load, so the ruler reveals the mass.