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Internet Archive

Internet Archive

The Internet Archive offers over 12,000,000 freely downloadable books and texts. There is also a collection of 550,000 modern eBooks that may be borrowed by anyone with a free archive.org account.

PhET Interactive Simulations project

PhET Interactive Simulations project

The PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education research and engage students through an intuitive, game-like environment where students learn through exploration and discovery.

Futurelearn

FutureLearn

Helps connect you to degrees and certificates that can be earned online from highly-respected universities.

FlatWorld 

edX

edX

edX

edX is a non-profit, massive open online course (MOOC) provider. The majority of edX courses are entirely free to access and most also offer an optional verified certificate track for a fee that varies per course. Courses may consist of video and text content, discussion forums, and a number of problem and assessment types.

Coursera

Coursera

Coursera is an education company that partners with the top universities and organizations in the world to offer courses online for anyone to take, for free. NUS has signed up to Coursera to offer its own MOOCs.

Cool4Ed

Cool4Ed

The three State of California Higher Education Systems are working together to provide you easy access to quality FREE and OPEN eTextbooks that everyone and anyone can use for teaching and learning.

Connexions

Connexions

A place to view and share educational material made of small knowledge chunks called modules that can be organized as courses, books, reports, etc. Anyone may view or contribute.

Chemistry Collective

Chemistry Collective

A collection of virtual labs, scenario-based learning activities, and concepts tests which can be incorporated into a variety of teaching approaches as pre-labs, alternatives to textbook homework, and in-class activities for individuals or teams.

Brilliant: Maths and Physics

Brilliant: Maths and Physics​

An environment to anyone with internet access and a passion for mathematics or physics.