Explore OER

Browse Trusted OER Sources Before You Search the Whole Web.

Explore California-focused and broader collections for textbooks, chapters, activities, media, and other open materials. You can browse on your own or bring a few trusted sources into a Promptbook search later.

Browse first. Use AI only if it helps.

Start With the Smallest Useful Source List

  1. California Community College faculty:Start with ASCCC OERI and the CCC-focused collections below.
  2. Add one or two broader sources.Choose sources that match the kind of material you need, such as a complete textbook, adaptable chapters, or activities.
  3. Search more deeply only if you need to.Browse directly, or copy a small source list into Find OER when you want AI help narrowing the field.

Already know your discipline? The ASCCC OERI discipline collection is usually the fastest first stop for California Community College faculty.

California Community Colleges

Start Here for CCC Courses

ASCCC OERI: OER by Discipline

Curated discipline collections developed with ASCCC OERI Discipline Leads. Many discipline pages include course-specific resources, notes, webinars, and additional teaching materials.

Best for: finding a CCC-relevant starting list for your discipline.

ASCCC OERI: Searchable OER by C-ID

A searchable collection of textbook-equivalent OER from the OERI discipline collections, organized around C-ID and related transfer information.

Best for: checking whether a commonly taught CCC course already has a strong textbook-equivalent lead.

California note: C-ID alignment is useful evidence, but faculty should still compare the actual resource with the current Course Outline of Record, course needs, and any applicable Common Course Numbering template.
CCC-focused and homegrown collections

More Places to Look for California Community College OER

COOL4Ed

The California Open Online Library for Education is a joint California public higher-education OER directory involving the California Community Colleges, CSU, and UC. It includes course materials connected to C-ID and examples of resources used by California institutions.

Best for: searching by C-ID and seeing California adoption/use signals alongside OER candidates.

OER Commons: California Community Colleges Hub

OER Commons includes a California Community Colleges hub with CCC-oriented textbooks and supplemental materials such as activities, primary-source resources, and course shells.

Best for: supplemental materials and CCC-specific discovery beyond complete textbooks.

CC ECHO

The California Consortium for Equitable Change in Hispanic Serving Institutions created OER for high-impact courses with an equity and inclusion focus. The consortium includes multiple California community colleges.

Best for: CCC-created materials developed with culturally responsive and equity-centered goals.

College of the Canyons OER Textbooks

A substantial collection of free online textbooks developed or used by College of the Canyons faculty across disciplines including anthropology, sociology, water technology, and more.

Best for: ready-to-review textbooks created in a California Community College teaching context.

Want to see what CCC faculty are building now? The ASCCC OERI OER Project Dashboard surfaces projects created or in development across the California Community Colleges. It is especially useful when a repository search does not yet show a finished resource.
Major textbook collections

Good Places to Look for Complete or Adaptable Texts

OpenStax

Peer-reviewed, openly licensed textbooks for many high-enrollment introductory college courses, often with instructor resources.

Best for: a ready-to-adopt primary textbook in a common introductory course.

Open Textbook Library

A large higher-education collection of complete open textbooks from many authors and publishers. Many titles include faculty reviews.

Best for: comparing complete textbooks across institutions and publishers.

LibreTexts

Subject-specific OER libraries with textbooks, chapters, ancillary materials, and tools for adapting or remixing course content.

Best for: faculty who may want to customize a text or combine materials from a large subject collection.

Pressbooks Directory

A large searchable catalog of books published through Pressbooks networks around the world. Many are openly licensed and some include interactive H5P activities.

Best for: finding institutionally published open textbooks, newer niche texts, and interactive books.

Watch for: the directory also contains some books with All Rights Reserved or other non-open terms. Verify the license on each candidate.

Broader discovery

Useful When You Need More Than a Textbook

OER Commons

A broad OER library covering higher education and other educational levels, including readings, activities, courses, modules, media, and other teaching materials.

Best for: one-unit resources, activities, supplemental materials, and interdisciplinary searches.

MERLOT

A long-running collection of higher-education learning materials, including open courseware and faculty-reviewed resources.

Best for: activities, courseware, simulations, media, and resources beyond conventional textbooks.

Watch for: verify the license and access conditions of the specific item rather than assuming every listed resource has the same reuse rights.

Optional: bring sources into a Promptbook search

Build a Trusted Starting-Source List

If you want AI help after browsing, select only the collections you actually want searched. Then copy the list and paste it into Trusted list or source to consider first on the Find OER page, or paste it directly into your AI chat.

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Before You Rely on a Repository Result

  • Open the original resource page.
  • Confirm the exact license and version.
  • Check whether ancillaries or homework systems have separate terms.
  • Review accessibility evidence and available formats.
  • Do not assume a resource fits your course merely because it appears in a respected repository.