| Collection | Subjects Covered | How it’s organized | |------------|------------------|--------------------| | (search “OpenStax * subject* + lecture”) | Physics, Biology, Chemistry, Algebra, Statistics, etc. | OpenStax provides a free PDF textbook; many educators have recorded chapter‑by‑chapter videos that follow the exact page numbers. | | Khan Academy “Course Playlists” | Entire high‑school curricula (e.g., “AP Physics 1”, “Algebra 2”) | Click the “Course” dropdown → “Play all” to treat the series like a video book. | | MIT 8.01 (Classical Mechanics) – Full Lecture Series | Physics (calc‑based) | 24+ lectures, each 50‑70 min, matching MIT textbook chapters. | | University of Colorado Boulder – “Chemistry 101” (OCW) | General Chemistry | 20‑minute videos synced to a free textbook PDF. | | Stanford Online “Machine Learning” (Andrew Ng) – YouTube | Intro to ML (good for advanced high‑schoolers) | 10‑minute video segments that act like a textbook chapter. |
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