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This graduate-level online lecture includes numerical methods; initial-value problems; network flows; and optimization. (The title of part 1 is: Computational Science and...

This advanced-level online lecture gives an introduction to gravitational waves in astrophysics.

Comprehensive language course in Russian. The idea of this course is to learn the language "like a native". This means that the course creates an immersive learning experience...

Khan Academy provides various free introductory video lessons on the history of the United States.

In this online course, Oscar nominee Samuel L. Jackson teaches acting. The course includes more than 20 video lessons and various supplemental materials.

This series of lectures gives an introduction to the mechanics of spaceflight.

This online video lecture series gives an introduction to linguistics.

Khan Academy provides various free introductory mathematics video lessons. Topics include elementary math, algebra, geometry, calculus, trigonometry, differential equations,...

This online lecture series covers the basic principles of Einstein's general theory of relativity, differential geometry, experimental tests of general relativity, black holes,...

This online lecture covers differential, integral and vector calculus for functions of more than one variable. These mathematical tools and methods are used extensively in the...

Free Korean language app with many short tests to learn "on the go". (Not a video course.)

This survey course introduces students to the important and basic material on human fertility, population growth, the demographic transition and population policy.

This online lecture is particularly recommended for persons who are interested in starting or are involved in a new business or venture.

This online course gives an introduction to artificial intelligence and deep learning for programmers.