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Khan Academy provides various free lessons for learners who prepare for the SAT test.

This online lecture explores the dynamics of evolution, including various mathematical models.

The goal of this online lecture is to illustrate the spectroscopy of small molecules in the gas phase.

This online course teaches the JavaScript language, jQuery, the JavaScript framework and the ins-and-outs of adding interactivity in the browser.

These short online courses provided by Skillshare cover various topics around fine art, including drawing, illustration, sketching, painting, acrylic painting, and watercolor.

This online course aims to provide students with an understanding of the role computation can play in solving problems. It teaches how to solve problems with basic computer...

The online lecture serves as an introduction to the theory and practice behind many of today's communications systems.

This course teaches how to program in R, which is a popular language used by data scientists and researchers.

In this online course, former U.S. President George W. Bush teaches leadership. The course includes more than 10 video lessons and various supplemental materials.

This online course teaches how to program in Python, a powerful and popular programming language. Many students learn Python as their first programming language.

This online course (part 2 of 2 courses) teaches how to build powerful interactive applications with this popular JavaScript library. React is an open source library developed...

This online lecture series introduces some of the important model systems studied in contemporary physics, including two-dimensional electron systems, the fine structure of...

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

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

This online lecture gives an introduction to machine learning for physicists. [Note: Lectures 1 and 2 are not in the right order on the course overview page.]

This online lecture series gives an introduction to Greek history. It traces the development of Greek civilization as manifested in political, intellectual, and creative...

This online lecture gives an introduction to computer architecture. It explores in great detail how computers are designed.

This online course gives an introduction to the programming language Ruby.

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

In this short online course, American designer Kelly Wearstler teaches the fundamentals of interior design.