Activities for introductory geoscience
Wide range of activities for introductory geoscience

All the best Science and Math Activities (SMILE)
National collection of science and math activities for children in informal environments

Climate Literacy and Energy Awareness Network (CLEAN)
Collection of climate and energy educational resources

Digital library of physics and astronomy education materials

CU-Boulder Accessibility resources
Resources for creating accessible Powerpoint, Word, and syllabi using Universal Design

Digital Library for Earth System Education (DLESE)
National collection of educational resources on earth science

National Science Digital Library
Searchable, national collection of educational materials in science and technology
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PhET Simulation Activities
Clicker questions, homework, and activities for use with the PhET Interactive Simulations

SEI Course Archives
Course archives from the Science Education Initiative from APS, CHEM, EBIO, GEO, IPHY, MCDB, and PHYS