The Concord Consortium Collection
The Concord Consortium Collection consists of hundreds of interactive digital resources. They span across subjects in science, technology, engineering and mathematics and contain materials appropriate for students ranging from elementary grades through higher education. These resources are all highly interactive, involving models, simulations, or the use of probes and sensors to collect and analyse real-time data in the classroom. They have been developed with the highest care for scientific accuracy and research-based pedagogy. All are open source and distributed free of charge.
The Concord Consortium a not for profit educational research and development organization whose work has the objective to stimulate large-scale, technology-based improvements in teaching and learning. Indeed, in other sections of the same website the current projects, research and publications are presented.
Shmoop
Shmoop is a free online platform containing over 1000 learning guides and test preparations written by educators and experts on a number of subjects (see table of content). It was created with the aim of improving learning tools by using an approach to education based on the keywords: relevant, real, approachable.
The learning guides are characterized by deep analysis of the topics, focusing questions, quotes and references to pop culture. Hypertext and multimedia play an important role in the guides as a way to provide students with an easier although richer learning possibility.
Shmoop holds itself to the highest academic standards and cites its sources so students borrowing ideas from it can (and indeed must) cite Shmoop in their work.
The content written primarily by Ph.D. and Masters students from top universities, like Stanford, Berkeley, Harvard, and Yale. Most of the content is free to be read without logging in, but with a free account other tools such as Clippings and Stickies become available.
Top rated contents are available in Spanish too.
Premium service gives access to the other materials and tools provided by the platform such as the premium test prep courses for the SAT, ACT, SAT Subject Tests, and AP exams and the possibility to create classrooms where to invite students and monitor their progress through detailed real-time reports.
Prezi U
Prezi U is a rich library of educational Prezi presentations and videos on different topics for students from elementary school to university. It can be browsed by subject or school.
The community built around it communicates through articles, blogs, forums and receive news by means of an RSS feed.

