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

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

This series of lectures gives an introduction to complex analysis.

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

This online course explores what cities and users can do to reduce their energy use and carbon emissions.

This online course teaches how to manage data with SQL, including mastering complex commands to manipulate and query data stored in relational databases. It includes topics such...

This lecture will follow the history and theory of architectural travel from the educational grand tour of the 19th and 20th centuries to the jet-setting omnipresence of today´s...

Khan Academy provides various free introductory biology video lessons. Topics include acids and bases, properties of carbon, macromolecules, energy / metabolism, enzymes, cell...

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

This online course provides a basic introduction to metric spaces. It covers metrics, open and closed sets, continuous functions (in the topological sense), function spaces,...

This online lecture is designed to serve as a first course in an undergraduate electrical engineering (EE), or electrical engineering and computer science (EECS) curriculum.

This online course teaches intermediate techniques to transform table data in SQL.

This lecture focuses on recent developments in image processing driven by medical applications. All algorithms are motivated by practical problems. The mathematical tools...

This online course teaches how to use color effectively to create attractive and useable websites.

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

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 online lecture introduces students to the modeling, quantification, and analysis of uncertainty.

This online lecture provides a review of linear algebra, including applications to networks, structures, and estimation, Lagrange multipliers. (The title of part 2 is:...

This online lecture series gives an introduction to galaxies and cosmology. It includes the Milky Way and the Local Group as well as larger-scale structures of the universe.

This online lecture covers the derivation of symmetry theory; lattices, point groups, space groups, and their properties; use of symmetry in tensor representation of crystal...