Every concept, animated
Short animated explainers for 147+ concepts across 11 subjects. Watch, learn, and explore — all free, forever.
Big O Notation
How Big O notation measures algorithm efficiency — see O(1), O(log n), O(n), O(n²), and O(2ⁿ) growth rates compared in 3D.
AlgorithmsBinary Search
Step-by-step visualization of binary search on a sorted array — halving the search space with each comparison.
AlgorithmsBinary Search Tree
3D tree of floating nodes with glowing edges. Keys travel down to find their position with in-order traversal.
Data StructuresBlockchain
Chain of blocks where each block contains data and a cryptographic hash linking it to the previous block. Immutable, decentralized ledger.
Computer ScienceConic Sections
Slice a double cone with a plane at different angles to produce four curves. Horizontal cut → circle. Tilted cut → ellipse. Cut parallel to the cone\'s side → parabola. Cut steeper than the side → hype
GeometryEuler\'s Identity
Euler\'s identity e^(iπ) + 1 = 0 links five fundamental constants in one equation. Show the complex plane with the unit circle, Euler\'s formula e^(iθ) = cos θ + i sin θ tracing the circle, and the spec
AnalysisFibonacci Sequence
The Fibonacci sequence visualized — watch 1, 1, 2, 3, 5, 8, 13, 21 build into the golden spiral. See how the ratio converges to phi (1.618).
Number TheoryFourier Series
Any periodic function can be built by adding sine and cosine waves of different frequencies. Show a square wave approximated by its first harmonic, then adding the 3rd, 5th, 7th, and higher harmonics
Analysis