OERs for Flexible Learning Program - SDO Antipolo City

Open Textbook Library

A catalog of free, openly licensed, peer-reviewed college textbooks.

Directory of Open Access Books

A discovery service for peer-reviewed open access scholarly books.

OAPEN Library

A repository of open access, peer-reviewed academic books.

Wikibooks

A free library of open-content textbooks anyone can edit and use.

arXiv

Open access preprints in physics, mathematics, computer science, and more.

PubMed Central

A free full-text archive of biomedical and life sciences research.

CORE

Aggregated open access research papers from repositories worldwide.

Semantic Scholar

A free AI-powered research tool for discovering academic papers.

UNESCO Digital Library

Publications, reports, and educational resources from UNESCO.

NASA STEM Engagement

Space science activities, lessons, and resources for students and teachers.

Library of Congress

Millions of digitized books, maps, photographs, and primary sources.

Europeana

Digital collections of art, books, and cultural heritage from Europe.

Open Culture

Free cultural and educational media, courses, audiobooks, and films.

HippoCampus

Free multimedia lessons and course content for middle school through college.

StoryWeaver

Thousands of free, openly licensed children's storybooks in many languages.

Global Digital Library

Free early-grade reading books and learning materials in many languages.

Code.org

Free computer science courses, tutorials, and activities for all ages.

Curriki

A free community of open educational resources and lesson materials.

Khan Academy

Free lessons, practice exercises, and instructional videos across all major subjects.

MIT OpenCourseWare

Free lecture notes, videos, and assignments from MIT courses.

OpenStax

Peer-reviewed, openly licensed college textbooks free to read online.

LibreTexts

A free library of open textbooks and course materials for colleges and schools.

PhET Interactive Simulations

Interactive science and math simulations from the University of Colorado Boulder.

CK-12 Foundation

Adaptive practice, simulations, and open textbooks for K-12 learners.

Project Gutenberg

Over 70,000 free public-domain ebooks available for download.

Saylor Academy

Free, self-paced online courses with certificates for college and career learning.

OpenLearn

Free online courses and educational resources from The Open University.

TED-Ed

Award-winning animated educational lessons and video series for students.

PBS LearningMedia

Standards-aligned videos, interactives, and lesson plans from PBS.

Smithsonian Learning Lab

Millions of digital museum resources for teaching and learning.

National Geographic Education

Geography, science, and exploration resources for classrooms.

CommonLit

Free reading passages and literacy resources for grades 3-12.

Directory of Open Access Journals

A directory of thousands of open access, peer-reviewed research journals.

MERLOT

A curated community of free online teaching and learning materials.

Internet Archive

A non-profit library of free books, movies, software, music, and web pages.

Wikimedia Commons

A vast free media repository of images, audio, and video for reuse.

eBooklatan Web

A collection of free Filipino and English ebooks for learners and educators.

Top Documentary Films

Free documentary films on a wide range of educational and topical subjects.

OhioLINK Theses and Dissertations

Searchable repository of theses and dissertations from Ohio academic institutions.

VTechWorks

Virginia Tech's institutional repository of scholarly works and theses.

CaltechTHESIS

Caltech's digital repository of electronic theses and dissertations.

Let's Read Asia

Free, openly licensed children's storybooks in Asian languages.

FreeTechBooks

Free online computer science, engineering and programming books.

OER Commons

A large digital library of open educational resources for educators and learners.