Visual essays that show you the ideas behind the formulas
Each essay takes a branch of mathematics and reveals the single idea at its core. No prerequisites, no proofs for their own sake — just the intuition, made visible.
From wardrobe choices to Bayes' theorem. Every probability is favorable outcomes divided by total outcomes.
From batting averages to confidence intervals. Every statistic is just an average, applied more and more carefully.
From sticks and shadows to measuring the Earth. Every geometric fact is deduced from measurements you can take.
From triangle ratios to the waves that describe the physical world. Two sides of a triangle, compared — that's the entire subject.
From circle peeling to slope fields. Curved things look straight when you zoom in far enough.
From grid transformations to eigenvectors. Every linear transformation is scaling along the right directions.
From bridge puzzles to social networks. Draw dots for things, lines for connections, and ask what you can reach.
From rotating squares to shuffling cups. Every symmetry is a move that can be combined, undone, or skipped.