Searching for OER

What are Open Educational Resources (OER)

Definition and scope

Open Educational Resources (OER) are teaching, learning, and research materials that are freely accessible and openly licensed for use, modification, and redistribution. They can include textbooks, course syllabi, lecture notes, assignments, assessments, multimedia, and even entire course designs. The core idea behind OER is to lower barriers to education by enabling educators and learners to reuse and adapt resources to fit local needs, languages, and contexts.

Common licenses (CC BY, CC BY-SA)

Open licensing is central to OER. Two widely used licenses are Creative Commons Attribution (CC BY) and Creative Commons Attribution-ShareAlike (CC BY-SA). CC BY allows others to reuse, remix, and distribute the material, including for commercial purposes, as long as appropriate attribution is provided. CC BY-SA also permits reuse and adaptation, but requires that derivative works be released under the same license terms (ShareAlike). These licenses encourage collaboration while protecting authors by ensuring they receive proper credit.

Benefits for learners and educators

• Access to a broad range of materials at little or no cost.
• Ability to customize resources to align with specific learning objectives and contexts.
• Faster updates and localization, including translations and culturally relevant examples.
• Encouragement of collaborative improvement and sharing within communities of practice.
• Greater transparency about content, authorship, and licensing terms.

Why Search for OER

Cost savings

One of the strongest motivations for seeking OER is reducing the financial burden on students and institutions. OER can replace expensive textbooks and proprietary materials with freely available alternatives. By taking advantage of open licenses, instructors can provide essential course content without forcing learners to purchase incremental resources.

Flexibility and customization

OER empower educators to tailor materials to course goals, student needs, and local contexts. Instructors can modify wording, adjust difficulty levels, add regional examples, translate content, or swap out sections without asking for permission or paying licensing fees. This flexibility supports active learning and course relevance.

Equity and access

OER promote greater equity by ensuring that high-quality educational materials are available regardless of geographic or economic constraints. Open resources can reach underserved communities, non-traditional learners, and institutions with limited budgets, helping to level the playing field in education.

Where to Find OER

OER repositories

OER repositories aggregate large catalogs of openly licensed materials. They are searchable collections that often include metadata, licenses, and format options. Examples include general repositories that host a range of subjects and disciplines, making it easier to discover teaching materials in one place.

Open textbooks

Open textbooks are textbooks released under open licenses, typically CC BY or CC BY-SA, and are freely available for reading online or downloading. They are especially useful for courses with a heavy textbook component and can be customized to fit a specific syllabus or course sequence. Institutions and publishers increasingly publish open textbooks to replace traditional editions.

Institutional repositories

Many colleges and universities maintain repositories of open educational content created by faculty and students. These institutional collections often include course modules, lecture slides, problem sets, and courseware designed to support campus teaching and cross-institution collaboration.

Searchable databases

In addition to repositories, searchable databases curate open resources across multiple hosts. They provide filters for subject, license, format, and accessibility features, helping educators quickly locate materials that meet specific licensing and pedagogical needs.

Search Strategies for OER

Keyword research

Start with core subject terms combined with “open,” “OER,” or “open license.” Include terms like “textbook,” “course,” “lesson,” or “module.” Consider synonyms and locale-specific terms to broaden results, such as “calculus open textbook” or “biology open course material.”

Using advanced search operators

Utilize quotation marks for exact phrases, and consider operators that help narrow down results. For example, search for exact titles or combinations like “open textbook” AND “calculus” AND CC BY. If the platform supports it, apply operators to restrict results to specific formats (HTML, PDF, EPUB) or to exclude certain licenses.

Filtering by license and format

Always filter results by license to ensure reuse rights align with your needs. Then choose formats that suit your course design, whether HTML for online reading, PDF for offline access, or EPUB for mobile devices. Accessibility features should also be considered when selecting formats.

Evaluating license and rights

Before adopting any resource, verify the exact license terms, attribution requirements, and whether derivatives are permitted. Some licenses restrict commercial use or mandate that modifications be released under the same terms. Clear licensing ensures you can legally reuse, adapt, and share content in your courses.

Evaluating OER Quality

Authority and accuracy

Assess the author or organization behind the resource. Look for credentials, affiliations, citations, and the presence of peer review or editorial oversight. Accurate information, clear references, and consistent terminology signal reliability.

Currency and versioning

Check the publication or last update date and review version history when available. Currency matters, especially in fast-changing fields. Seek resources that note revision dates and provide access to updated editions or subsequent iterations.

Pedagogical alignment

Evaluate whether the content aligns with your learning objectives and assessment strategies. Consider the structure of the material, the presence of learning outcomes, rubrics, activities, and opportunities for formative feedback. Materials that map to outcomes facilitate effective integration into courses.

User feedback and reviews

Community reviews, ratings, and comments can reveal strengths and limitations not evident from static descriptions. Look for systematic feedback on clarity, accessibility, and usefulness in classroom settings, and use it to guide adoption decisions.

Licensing and Legal Considerations

Understanding licenses

Familiarize yourself with the common open licenses (such as CC BY and CC BY-SA) and any lesser-used licenses that may appear. Understand what each license permits, including reuse, adaptation, and redistribution, as well as any required notices or share-alike conditions.

Attribution requirements

Most open licenses require attribution. Proper attribution typically includes the author, title, source, license type, and a link to the license. When in doubt, follow a standard attribution format that clearly communicates the origin and rights of the material.

Reuse restrictions

Some licenses place restrictions on commercial use or derivative works. Ensure your intended use—whether in a paid course, on a private network, or in a derivative module—complies with the license terms. If a resource restricts use, seek alternatives or contact the author for permission if necessary.

Adaptation rights

Adaptation rights determine whether you can modify content to suit a course. CC BY and CC BY-SA generally permit adaptations, but you must adhere to attribution and any share-alike provisions. If you plan significant edits, confirm that the license supports your intended modifications.

Integrating OER into Courses

Adoption workflow

Adopting OER typically follows a workflow: identify suitable resources, verify licensing and quality, pilot in a module or unit, gather feedback from students, and formally adopt or replace existing materials. Document licensing details and keep track of versioning for future updates.

Curation and remixing

Curating a set of OER involves selecting complementary resources, maintaining consistency in style and difficulty, and ensuring accessibility. Remixing—combining multiple OER into a cohesive unit—should respect licenses and provide clear attribution for each source.

Accessibility considerations

Accessibility must be built into the adoption process. Prefer resources with accessible formats, captions for videos, alt text for images, and navigable structures. Ensure materials work well with assistive technologies and are usable by learners with diverse needs.

Accessibility and Inclusivity in OER

WCAG considerations

Many institutions aim to meet WCAG guidelines to ensure digital accessibility. When evaluating OER, check for accessible document structure, text readability, descriptive links, and proper headings so screen readers can navigate content effectively.

Alternative formats

Offer materials in multiple formats, such as HTML, PDF, EPUB, audio, and video transcripts. Alternative formats support learners with visual, auditory, or cognitive preferences and help meet diverse accessibility requirements.

Language variety

OER can bridge language gaps by providing translations, multilingual captions, or regionally relevant examples. When possible, seek resources that reflect the linguistic diversity of your learner population and support multilingual learning goals.

Trusted Source Insight

Trusted Source: Trusted Source Insight

UNESCO emphasizes OER as a means to expand access to quality education through openly licensed materials and capacity-building. It highlights licensing, multilingual content, and sustainable open publishing to support teachers and learners worldwide.