Courses
Science
20 free courses in Science. Mathematics, physics, chemistry and biology, solved rather than only explained.
Courses to get you started
All free, all made by people who teach in public.
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
All Science courses
Nothing here costs anything. No card, no trial, no account needed to watch.
Biology
In 50 episodes, we’re going to explore biology—the science of life. Dr. Samuel Ramsey will guide you through life’s vast interconnectedness, telling lesser-known stories of biologists along the way. We’ll discover how evolution, genetics, ecology, and cell and organismal biology deepen our knowledge
by CrashCourse
10h 48m51 lessonsBeginner14M views
Free
Cambridge IGCSE Chemistry 0620
Cambridge IGCSE Chemistry 0620 for exams in 2023, 2024 & 2025
by IGCSE Study Buddy
7h 57m43 lessonsIntermediate4.2M views
Free
Ultrasound physics
This is a basic ultrasound physics course designed for radiologists and radiographers looking to study for ultrasound physics or radiology physics exams.
by Radiology Tutorials
6h 9m26 lessonsBeginner1.7M views
Free
Ultrasound physics course
This is a basic ultrasound physics course designed for radiologists and radiographers looking to study for ultrasound physics or radiology physics exams.
by Radiology Tutorials
6h 9m26 lessonsBeginner1.7M views
Free
Physics
In 46 episodes, Dr. Shini Somara will help you find your place in the world -- literally! -- with physics. This course is based on introductory college-level material and the 2016 AP Physics I and II curriculum. By the end of this course, you will be able to: *Identify the fundamental forces descri
by CrashCourse
7h 29m47 lessonsBeginner71M views
Free
General Biology 1 - Lectures
Lectures that I have recorded for my General Biology 1 course.
by Biology with Jess
13h 17m15 lessonsIntermediate168K views
Free
Geology Extra Curricular
Want to dive deeper into the topics covered in Crash Course Geology? Then this playlist is for you. Learn more about rocks, rivers, and renewable energy, plus what you need to know about climate change, natural disasters, and more.
by CrashCourse
10h 37m48 lessonsBeginner49M views
Free
Algebraic Bethe Ansatz. A.V.Zabrodin, V.V.Prokofev. Fall 2025
26.09.25
by Mathematics at HSE
13h 14m13 lessonsIntermediate994 views
Free
Calculus 1 Playlist 2
Topics: Review of Algebra/Trigonometric Concepts, Finding Limits, Derivatives and Derivative Techniques, Integrals and Integral Techniques, and Applications.
by Professor Leonard
6h 1m27 lessonsIntermediate140K views
Free
AP Physics C: Mechanics | Khan Academy
Check out AP Physics C: Mechanics on Khan Academy:
by Khan Academy
8h 9m36 lessonsIntermediate457K views
Free
AP Chemistry Review
Let me help you prepare for the AP Chemistry exam! These review materials are the absolute fastest way to review all the most important concepts. Check out the unit summary videos, then test your knowledge with tons of practice problems.
by Professor Dave Explains
13h 10m41 lessonsIntermediate675K views
Free
Physics
In this video, you'll learn the following topics ✅Heat conduction and Calorimetry ✅Molecular basis of expansion ✅Linear expansion in solids ✅Volume expansion ✅Expansion in liquids ✅Expansion in gases ✅Application: Bimetallic Strip
by Fidel Tutorial
6h 51m23 lessonsIntermediate2.2K views
Free
Linear Algebra (Full Course)
A one semester, introductory course in Linear Algebra. Emphasizes both conceptual understanding and procedural fluency in applying the techniques of Linear Algebra. Major topics are solving linear systems, linear transformations, linear independence, bases, dimension, eigenvalues and eigenvectors, d
by Dr. Trefor Bazett
10h 50m84 lessonsBeginner5.6M views
Free
Chemistry
In this video, we've covered the following topics: ✅Temperature and Collision Theory ✅Transition State Theory ✅Examples and Exercises
by Fidel Tutorial
13h 16m26 lessonsIntermediate1.3K views
Free
Calculus II (Integration Methods, Series, Parametric/Polar, Vectors) **Full Course**
This is the playlist for a full Calculus II course taught by Dr. Trefor Bazett. It will cover: 1) Integration Methods (Integration by Parts, Trigonometric Integrals, Trig subs) 2) Improper Integrals 3) Arclength and Surface Area of revolution 4) Sequence and Series (Power Series, Taylor Series, Con
by Dr. Trefor Bazett
7h 45m52 lessonsIntermediate4.2M views
Free
Yale Quantum Institute Course on Quantum Error Correction
This video is the live capture of the Yale Quantum Institute Course on Quantum Error Correction, held at the Yale University in July 2025, in partnership with NC A&T. This short course will provide viewers strong foundation on Quantum Error Detection & Quantum Error Correction. Viewers are encoura
by YaleCourses
11h 38m7 lessonsBeginner12K views
Free
Calculus I (Limits, Derivative, Integrals) **Full Course**
This is the playlist for a one-semester course on Single Variable Calculus. It covers limits, derivatives, and the beginning of integrals.
by Dr. Trefor Bazett
7h 37m62 lessonsIntermediate2.4M views
Free
Discrete Math (Full Course: Sets, Logic, Proofs, Probability, Graph Theory, etc)
A one-semester course on Discrete Math taught by Dr. Trefor Bazett Covers: Logical Statements, Logical Operations, Truth Tables, Sets, Functions, Relations, Proof Methods such as Contrapositive, Contradiction and Induction, and Probability.
by Dr. Trefor Bazett
9h 38m85 lessonsIntermediate16M views
Free
University Physics 2 Full Course: Electricity, Magnetism, and Optics
An entire university-level calculus-based course in electromagnetism and optics, with focus on conceptual understanding. Clear lectures from an actual physics professor, presented in organized bite-size videos. Welcome to my passion!
by Physics That Makes Sense!
13h 59m51 lessonsIntermediate27K views
Free
University Physics 1 Full Course: Mechanics (The Physics of Motion)
An entire university-level calculus-based course in mechanics, with focus on conceptual understanding. Clear lectures from an actual physics professor, presented in organized bite-size videos. Welcome to my passion!
by Physics That Makes Sense!
15h 12m78 lessonsIntermediate104K views
Free