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

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

This online lecture aims to help students acquire both the mathematical principles and the intuition necessary to create, analyze, and understand insightful models for a broad...

This is an online lecture that introduces students to the complexities of working in small, multidisciplinary teams to develop video games. Students will learn creative design...

This is the first of a two-part online lecture that provides the foundations for contemporary research in selected areas of atomic and optical physics.

This course is intended to provide an up-to-date introduction to the development of English society between the late fifteenth and the early eighteenth centuries.

This online lecture explores Science Fiction as a genre.

This online lecture series gives an introduction to self-driving cars and their technology.

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

This online course teaches how to create websites by structuring the pages with HTML.The course is designed for beginners and includes HTML elements and structures as well as...

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

This collection of YouTube playlists provides an introduction to car technology for beginners. It includes several video lists on topics such as car engines, engine components,...

This short online course is designed for engineers, scientists, medical personnel, managers, and others who work with lasers and/or fiberoptics, or who anticipate working with...

This online course discusses numerical methods for Partial Differential Equations (PDE).

This is the first semester in a two-semester introductory video lecture focused on current theories of structure and mechanism in organic chemistry, their historical...

This online lecture gives an introduction to the concepts of machine learning. (Some math and programming experience required.)

This online lecture explores the implications of extracting and using energy resources, metals and mineral resources.

Highlights of Calculus is a series of short online videos that introduces the basics of calculus—how it works and why it is important.

This online lecture is an introduction to several fundamental ideas in electrical engineering and computer science, using digital communication systems as the vehicle.

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