Crack the Enigma
A simplified Bletchley Park learning simulation showing how crib-based reasoning and logical constraints reduce Enigma settings step by step.
Coordinates: Points, Symmetry, Transformations
Plot points, reflect shapes, and test transformations on the coordinate plane.
All Simulations
Discover π: Newton, Generalized Binomial Series, and Slow Convergence
Advanced historical-mathematical simulation: estimate π from quarter-circle area using Newton’s generalized binomial expansion and integration, and see why this direct method converges painfully slowly.
Fractions: Parts, Number Line, Missions
Learn fractions as parts of a whole and equivalent forms (fraction, decimal, percent) with cards, number line, and missions.