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The Atlas separates maps from evidence. Module MOCs establish order; concept notes explain ideas; source notes evaluate learning materials; lab notes record what was tested.
Recommended loop
- Enter the track and take a module self-test before studying.
- Pick one listed free resource and one checkpoint.
- Explain the idea without notes, then test it with a calculation, trace, or small experiment.
- Capture uncertainty and limitations rather than smoothing them over.
- Revisit the frontmatter review date.
state describes demonstrated understanding: queued, studying, can-explain, applied, or reviewing. It is not a quality score.
Resource pages such as Free Courses are navigational views. Canonical titles, URLs, licenses, and availability are maintained in the site’s data catalog.