Courses
Science
4 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.
Important skills for Biology 生物科的重要技巧
重要技巧以待不時之需。 Some handy skills at your disposal.
by 萌芽教室 Sprouting Classroom
58m5 lessonsBeginner4.5K views
Free
HKDSE Chemistry Chapter 6 The Periodic Table 元素週期表
什麽是元素週期表呢？它沒有一些規律？ What is the periodic table? Are there any patterns?
by 萌芽教室 Sprouting Classroom
44m4 lessonsBeginner3.6K views
Free
HKDSE Chemistry Chapter 11 Occurrence and Extraction of Metals 金屬的存在與提取
金屬是如何提取呢？有哪五種常用方法呢？ How do we extract metals? What are the five common methods?
by 萌芽教室 Sprouting Classroom
58m5 lessonsBeginner2.7K views
Free
Arximed qüvvəsi (mövzu izahı). #fizika #dərslər #hazırlıq #physics
by Fizika Evi
47mBeginner762 views
Free