Courses
Science
16 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
Biology
by CrashCourse
10h 48m · Beginner
May 2023
Free51 lessons
Ultrasound physics
by Radiology Tutorials
6h 9m · Beginner
March 2023
Free26 lessons
Ultrasound physics course
by Radiology Tutorials
6h 9m · Beginner
October 2024
Free26 lessons
All Science courses
Nothing here costs anything. No card, no trial, no account needed to watch.
Cambridge IGCSE Chemistry 0620
Cambridge IGCSE Chemistry 0620 for exams in 2023, 2024 & 2025
by IGCSE Study Buddy
7h 57m43 lessonsIntermediate4.2M views
Free
Общая химия. Понятия. Законы. Формулы.
В этом плейлисте ты найдешь объяснение химических понятий и законов. Познакомишься с важнейшими химическими формулами и алгоритмами решения типовых задач.
by Птичка Химичка -Химия с Нуля-
16h 14m71 lessonsIntermediate6.3M 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
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
Foundations of Biology 生物科基礎
什麽是生物學？我究竟可以如何準備高中生物科？同學們不用擔心！這個部分將提供你一切所需。 What is Biology? How can I prepare for my biology lessons in F4-6? No worry, this section provides everything you need.
by 萌芽教室 Sprouting Classroom
7h 33m31 lessonsIntermediate57K 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
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
Артамкин И.В. Дискретная математика. 1 курс. 2020
by Mathematics at HSE
14h 35m11 lessonsIntermediate10K views
Free