Interactive linear algebra

SVD, PCA & ICA

Explore matrix transformations, dimensionality reduction, and source separation through two interactive lessons. Each includes visual experiments and quizzes.

Claude explainer

Finding better axes

A continuous lesson with interactive figures, quizzes, and an audio source-separation experiment.

Open the Claude lesson Codex explainer

Ways of Seeing

Seven chapters covering matrix geometry, low-rank reconstruction, PCA projections, and ICA, with checkpoints throughout.

Open the Codex lesson

You can switch between the lessons at any time. Each lesson keeps its own quiz progress in your browser.