Courses
Science
26 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.
MIT 18.642 Topics in Mathematics with Applications in Finance, Fall 2024
Instructors: Dr. Peter Kempthorne, Dr. Vasily Strela, Dr. Jake Xia View the complete course: https://ocw.mit.edu/courses/18-642-topics-in-mathematics-with-applications-in-finance-fall-2024 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP601Q2jo-J_3raNCMMs6Jves View previous versi
by MIT OpenCourseWare
26h 12m22 lessonsIntermediate1.5M views
Free
MIT 18.200 Principles of Discrete Applied Mathematics, Spring 2024
Instructors: Prof. Ankur Moitra, Prof. Peter Shor, Susan Ruff View the complete course: https://ocw.mit.edu/courses/18-200-principles-of-discrete-applied-mathematics-spring-2024 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP61p2fXeXjNCrfNHFwyW-bl0 This course will teach you ill
by MIT OpenCourseWare
24h 42m20 lessonsIntermediate165K 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
MCAT Biology
UTD. Twice a week. Gap year M4. All gas, no brakes.
by Yusuf A. Hasan
20h 32m20 lessonsIntermediate836K views
Free
MIT 6.1200J Mathematics for Computer Science, Spring 2024
Instructor: Zachary Abel, Brynmor Chapman, Erik Demaine View the complete course: https://ocw.mit.edu/courses/6-1200j-mathematics-for-computer-science-spring-2024/ YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP61VNvICqk2HXJTonnKgAc9d Elementary discrete mathematics for science
by MIT OpenCourseWare
31h 40m24 lessonsIntermediate645K views
Free
Calculus 1 (Full Length Videos)
Topics: Review of Algebra/Trigonometric Concepts, Finding Limits, Derivatives and Derivative Techniques, Integrals and Integral Techniques, and Applications.
by Professor Leonard
44h 57m32 lessonsIntermediate25M views
Free
Phys 326 Quantum Mechanics II
Course web page: Cemal Yalabık (Spring 2024) Department of Physics Bilkent University
by Bilkent Üniversitesi
25h 13m31 lessonsIntermediate21K views
Free
Calculus 2 (Full Length Videos)
Calculus of Logarithmic and Exponential Function, Techniques for Solving Integrals, Series, and Calculus with Polar Coordinates.
by Professor Leonard
50h 3m27 lessonsIntermediate17M 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
Period Integrals of Algebraic Varieties and GKZ A-Hypergeometric Functions. S. Tanabe. Fall 2025
06.10.25
by Mathematics at HSE
17h 12m10 lessonsIntermediate1.4K 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
Intermediate Algebra Playlist 2
Algebra skills including: Solving basic equations, Rational expressions and rational equations, Graphing, Inequalities and Absolute Value Equations, Radicals and radical equations, Working with Quadratic equations, Exponential and Logarithmic equations, and Conic Sections.
by Professor Leonard
4h 30m21 lessonsIntermediate97K 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
Intermediate Algebra (Full Length Videos)
Algebra skills including: Factoring Basic Polynomials, Solving basic equations, Rational expressions and rational equations, Graphing, Inequalities and Absolute Value Equations, Radicals and radical equations, Working with Quadratic equations, Exponential and Logarithmic equations, and Conic Secti
by Professor Leonard
54h 33m46 lessonsIntermediate2.7M views
Free
Calculus - Limits Test Review
This calculus 1 playlist provides access to some free practice test questions on limits.
by The Organic Chemistry Tutor
18h 22m31 lessonsIntermediate582K 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 With Calculus
This playlist contains videos with physics and calculus.
by The Organic Chemistry Tutor
17h 16m24 lessonsIntermediate12M 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
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
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
Characteristic Classes and Enumerative Geometry. KAZARYAN M. Spring 2026
20.01.2026
by Mathematics at HSE
39h 32m29 lessonsIntermediate2.9K views
FreeThe author has removed some lessons
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