Interactive Labs: ten playgrounds that run in your browser

Labs are hands-on companions to our learning tracks. Instead of only reading about how quicksort or Dijkstra’s algorithm works, you watch it run step by step; instead of memorizing SQL syntax, you run real queries against a live database.

Every lab runs entirely in your browser — the SQL engine, the Python runtime, the filesystem, and the visualizers are all client-side. Nothing you type is uploaded, so it stays fast, private, and works offline once loaded.