Kahn Academy Learning resources for all ages and subjects. Online courses, lectures, instructional videos, practice exercises.
Science Education STEM education materials related to basic science, including supplemental curricular activities, multimedia products, term glossary, and a weekly blog. (NIGMS: National Institute of General Medical Sciences)
Exploratorium: Tools for Teaching and Learning This site offers hundreds of ways for students to play and learn about science concepts with educational media and detailed learning activities.
Data.Gov Data, tools, and resources to conduct research. Hundreds of thousands of datasets on a wide variety of topics available to download and utilize.
OER Commons A public digital library of open educational resources that is free for anyone and everyone to explore ,create in, collaborate, and utilize.