Science and Mathematics
- CK12.org — A pioneer in open resources providing secondary math and science Flexbooks including Flexmath content originally developed at Leadership Public Schools.
- HippoCampus.org — Over 5700 free videos in 13 subject areas .
- NROCmath.org — A great Hewlett Foundation-funded open Algebra 1 course and a developmental math sequence, guided by input from instructors, administrators, and students nationwide.
- Educurious — A Bill Gates-funded OER and project-based learning (PBL) curriculum designed to align with Common Core State Standards.
- Khan Academy — Free library of more than 3,000 math, science, history lesson delivered in easy-to-understand videos for anyone.
Comprehensive Modular Resources
- Curriki.org — A big library of shared courses and content.
- OERcommons.org — A dynamic digital library and network. Explore open education resources and join our network of educators dedicated to curriculum improvement.
- Gooru — This learning navigator supports teachers to personalize learning for their students and students to take ownership of their learning.
- Power My Learning — FREE K-12 platform enables personalized instruction and self-directed learning; educational activities for parents and teachers.
- Big History Project — A Bill Gates-funded thematic interdisciplinary project with 13.8 billion years of history told through engaging videos, animations, articles, and classroom activities targeting middle- and high-school students.
- Muzzylane — Harnesses adaptive game-based learning for digital curriculum and assessment.
Mostly Higher Education
- OpenStax — View and share free educational material in small modules that can be organized as courses, books, reports or other academic assignments.
- Open Courseware Consortium — A global network of educational institutions, individuals and organizations that support an approach to education based on openness, including collaboration, innovation and collective development and use of open educational materials.
- The Saylor Foundation — Free and open online college-level courses to students without registrations or fees.
- Google in Education and Google Course Builder provide great professional dvelopment and learning resources for educators to create and collaborate in the classroom.
- iTunesU — Tons of mostly post-sec content.
- YouTube EDU — More than 1,000 educational channels.
- PBS LearningMedia — Provides tens of thousands of digital resources for educators and is especially valuable to the flipped classroom.
- National Geographic — A longstanding reputation of supporting learning with valuable multimedia resources for any classroom.