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OpenStax

Peer-reviewed college textbooks you can read for free

Toolora score95Free
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Free

MIT OpenCourseWare

MIT lecture notes, exams, and videos for free

Toolora score96Free
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Free

Khan Academy

Free world-class education for anyone

Toolora score95Free
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Free

SpecOpenStaxMIT OpenCourseWareKhan Academy
CategoryEducation & LearningEducation & LearningEducation & Learning
PricingFreeFreeFree
Toolora score95/10096/10095/100
Best fortextbooks, college, open, coursescourses, mit, lectures, opencourses, maths, free, k12
Top features
  • ·Peer-reviewed textbooks
  • ·Read online or PDF
  • ·Instructor resources
  • ·Lecture notes and exams
  • ·Video lectures on many courses
  • ·No registration required
  • ·Maths through college level
  • ·Mastery practice system
  • ·Teacher dashboards