The National Science Digital Library provides multimedia, lessons, and assessment resources for kindergarten through post-seondary with an emphasis on sciences, technology, engineering, and mathematics (STEM).
NEEDS offers educators in engineering, compuer science, math, physical and life sciences 100 000 items: instructional software, simulations, tutorials, research papers, case studies, lectures and presentations.
The ChemCollective is a collection of virtual labs, scenario-based learning activities, tutorials, and concept tests. Teachers can use our content for pre-labs, for alternatives to textbook homework, and for in-class activities for individuals or teams.
Chemistry Central is an open access publisher, operated by BioMed Central and owned by Springer Science+Business Media, committed to the free and widespread dissemination of chemical research.\
Directory of Open Access Books--Chemistry: Index to open access eBooks.
The Math Forum contains the Internet Mathematics Library offering links to educational materials, problems and exercises, courses, lesson plans, calculators, computer and mobile math software.
Directory of Open Access Books--Mathematics and Statistics: Index of open access eBooks.
BioMed Central Open Access Journals; a variety of journals including BMC Nursing, BMC Oral Health, BMC Palliative Care, BMC Pharmacology.
Directory of Open Access Books--Biology; Index to open access eBooks.
InTech is one of the largest multidisciplinary open access publisher of books covering Science, Technology and Medicine.