PLOS “Public Library of Science (PLOS) is a nonprofit publisher, membership, and advocacy organization with a mission to accelerate progress in science and medicine by leading a transformation in research communication.”
JSTOR requires institutional subscription, but has provision for free individual access to a portion of the content. Currently, Addis Ababa and Mekelle Universities are subscribers.
PubMed “comprises more than 22 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.”
Matter & Interactions “a textbook by Ruth Chabay and Bruce Sherwood that emphasizes a modern perspective on the calculus-based introductory physics curriculum taken by engineering and science students.” It uses 3D interactive simulations written in vPython (Open Source). For physics instructors there is an additional resource VPython Introductory Computational Physics.
