Angles and Protractor: Estimate, Compare, and Build
Estimate angles by eye, compare them, measure them with a protractor, and build target angles.
Buffon’s Needle: how randomness helps estimate π
Advanced probability simulation of Buffon’s needle experiment: throw random needles onto parallel lines, watch crossings accumulate, and see how tosses divided by crossings approaches π.
All Simulations
Coordinates: Points, Symmetry, Transformations
Plot points, reflect shapes, and test transformations on the coordinate plane.
Crack the Enigma
A simplified Bletchley Park learning simulation showing how crib-based reasoning and logical constraints reduce Enigma settings step by step.