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Science

2 free courses in Science. Mathematics, physics, chemistry and biology, solved rather than only explained.

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All free, all made by people who teach in public.

Strongest courses Recently added For beginners

Crash Course Geology
by CrashCourse
3h 38m · Beginner
April 2026
Free22 lessons
MIT 18.642 Topics in…
by MIT OpenCourseWare
26h 12m · Intermediate
October 2025
Free22 lessons
Biology
by CrashCourse
10h 48m · Beginner
May 2023
Free51 lessons
MIT 18.200 Principles of…
by MIT OpenCourseWare
24h 42m · Intermediate
November 2025
Free20 lessons

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2 courses

Free courses in Science