Learning apps
A growing collection of small games, visual explorations, and interactive widgets for learning.
Guess the Equation
Solve the daily equation in six guesses.
Nonogram
Reveal the daily picture with row and column clues.
Sudoku 6×6
Complete the daily 6×6 logic grid.
Fraction Helper
See fractions as pies, bars, and a number line.
Unit Converter
Convert units across length, mass, time, and more.
Unit Circle
Drag an angle and watch sine and cosine move.
Shape Explorer
Explore 2D shapes with live formulas.
3D Geometry
Rotate solids and read volume and surface area.
Graphing
Tune functions and watch the curve change.
Derivative Explorer
Drag along a curve and watch the tangent slope.
Geometry Theorems
Explore classic theorems with draggable proofs.
Marbleslides
Type an equation, hit launch, watch the marbles slide into the stars.
Probability Playground
Flip, roll, spin, drop. Theory vs reality, live.
Conic Sections
Tilt the plane and watch the conic shape change.
Tower of Hanoi
Move all disks to the right peg — never on a smaller one.
Minesweeper
Classic Minesweeper with optional probability hints.
Sorting Visualizer
Watch six classic sorting algorithms race side by side.
Pathfinding
Compare BFS, DFS, Dijkstra, and A* on a grid maze.