Courses
Science
19 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
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7th Grade, Unit 1, Illustrative Mathematics Tutorials Playlist
7th Grade, Unit 1, Open Up Resources - Illustrative Mathematics Tutorials Playlist. Search #711math #712math #713math to find individual tutorials fast!
by Illustrative Tutor
2h 46m13 lessonsBeginner464K views
Free
Gr. 10 Chemistry
A day-by-day lesson of topics covered in SNC2D (Gr. 10 Academic Science). Worksheets and homework solutions are linked below. PowerPoints & CoursePack with Answer Keys: (log out of gapps account if it asks for permission) Patreon: (Do not click if you are a current student)
by Science'n'me
2h 53m14 lessonsBeginner184K views
Free
Cell Biology Full Course | 13 High-Yield Chapters
🎓 Welcome to the Complete Cell Biology Lecture Series by MedicoMedics! In this full-length, 2.5+ hour course, we break down cell biology into 13 crystal-clear chapters — perfect for medical students, premeds, nursing students, biology majors, and anyone preparing for USMLE, NCLEX, PLAB, or related
by MedicoMedics
2h 32mBeginner18K views
Free
Algebra Introduction - Basic Overview - Online Crash Course Review Video Tutorial Lessons
This math video tutorial provides a basic overview of concepts covered in a typical high school algebra 1 & 2 course or a college algebra course. This video contains plenty of lessons, notes, examples, and practice problems for you to get a good foundation in algebra. Subscribe:
by The Organic Chemistry Tutor
1h 18mBeginner5.3M views
Free
HKDSE Chemistry Chapter 5 Atomic Structure 原子結構
原子的結構是怎樣的呢？它們是由什麽造成的？ What is the structure of atoms? What are they made of?
by 萌芽教室 Sprouting Classroom
1h 46m8 lessonsBeginner37K views
Free
HKDSE Biology Chapter 4 Movement of substances across the cell membrane 物質穿越細胞膜的活動
什麽是細胞膜？物質如何穿透它呢？ What is a cell membrane? How do substances pass through it?
by 萌芽教室 Sprouting Classroom
2h 12m9 lessonsBeginner18K views
Free
HKDSE Chemistry Chapter 7 Chemical Bonding: Ionic Bonding and Metallic Bonding 離子鍵及金屬鍵
什麽是離子鍵及金屬鍵？它們是怎樣組成的？有什麽特性？ What are ionic bonds and metallic bonds? How do they form? Any properties?
by 萌芽教室 Sprouting Classroom
1h 30m7 lessonsBeginner21K views
Free
HKDSE Biology Chapter 2 Molecules of life 生命分子
生命是由什麽分子構成呢？ What are the building blocks of life?
by 萌芽教室 Sprouting Classroom
2h 4m8 lessonsBeginner15K views
Free
HKDSE Biology Chapter 3 Cellular organisation 細胞組織
我們如何觀察細胞？細胞内有什麽？ How do we observe cells? What are inside a cell?
by 萌芽教室 Sprouting Classroom
1h 56m8 lessonsBeginner14K views
Free
HKDSE Biology Chapter 5 Metabolism and enzymes 酶與新陳代謝
什麽是酶？它們爲何那麽重要？ What are enzymes? Why are they crucial?
by 萌芽教室 Sprouting Classroom
1h 20m6 lessonsBeginner10K views
Free
HKDSE Biology Enrichment 生物科增潤内容
增潤内容。 Enrichment lessons.
by 萌芽教室 Sprouting Classroom
1h 53m11 lessonsBeginner11K views
Free
AP Physics 2
Review Material for the AP Physics 2 Exam in May. Additional Review can be found at:
by Science'n'me
1h 35m7 lessonsBeginner1.9K views
Free
HKDSE Physics Chapter 6 Kinematics 運動學
運動學研究物件之運動，並以數式連繫不同量。 Kinematics is the study of the motion of objects. We attempt to link quantities with mathematical equations.
by 萌芽教室 Sprouting Classroom
1h 10m4 lessonsBeginner2.4K views
Free
HKDSE Physics Topic 2 Basic mechanics 基礎力學
我們會探究重要數式來研究物件的運動，並探索牛頓提出的三大定律。 We will look into fundamental mathematical equations that describe the motion of objects, and explore the three Newton's Laws.
by 萌芽教室 Sprouting Classroom
2h 35m9 lessonsBeginner3.9K views
Free
Box2D Physics
All of the Box2D with Processing (Java) tutorial videos.
by The Coding Train
2h 12m12 lessonsBeginner371K views
Free
Biology 124: Cytology
Paul Andersen takes you on a tour of the cell. He starts by explaining the difference between prokaryotic and eukaryotic cells. He also explains why cells are small but not infinitely small. He also explains how the organelles work together in a similar fashion. Do you speak another language? H
by Melissa Vorster
1h 49m12 lessonsBeginner55M views
Free
Mathematics Lessons for JAMB, WAEC, NECO, NABTEB, SS1, SS2 and SS3 students
Join the full class at: https://myschool.ng/classroom/topic-videos?subject=mathematics Get in-depth, detailed topic by topic video lessons on Mathematics, specially designed for candidates preparing for exams such as JAMB, WAEC, NECO and NABTEB candidates. These video lessons attempt to cover all s
by Myschool
2h 25m11 lessonsBeginner420K views
Free
გენების რეგულაცია ყველასთვის. Young Minds Tbilisi-ს საჯარო ლექციების კურსი, ლაშა დალაქიშვილი
ევროპის ფიზიკოსთა საზოგადოების ახალგაზრდულმა ორგანიზაციამ, Young Minds Tbilisi ატარებს საჯარო ლექციების კურსს. მოცემული ლექცია შეეხება გენების რეგულაციის რთულ და კომპლექსურ ფენომენს. ცნობილია, რომ სიცოცხლის კოდი ჩაწერილია დნმ-ის მოლეკულაში, თუმცა, დღემდე დაუდგენელია ამ მოლეკულის მუშაობის ზუსტი პრინ
by Young Minds Tbilisi
1h 1mBeginner102 views
Free
耶鲁大学开放课程：基础物理 Open Yale course：Fundamentals of Physics 01
by funny
1h 13mBeginner567 views
Free