Understanding Creative Commons Licenses: A Guide for Sharing Digital Content

Locate CC content through search.creativecommons.org, Flickr's Creative Commons page, Vimeo's CC section, and Wikimedia Commons. Use the TASL acronym for attribution: Title, Author, Source, License. Always include author names and license links. The noncommercial condition applies to use type, not user type—a nonprofit charging fees may violate NC licenses. When uncertain, contact creators directly. Public domain works generally predate 1923, though exceptions exist.

All Creative Commons licenses require attribution (BY component). When reusing or sharing a work, users must credit the creator. The proper attribution format includes: the title of the work, the source, the author/creator, and the license used. This is often referred to as TASL (Title, Author, Source, License). Creative Commons provides resources for best practices in attribution, including a wiki with detailed guidance.

The TASSEL method provides a systematic approach to attributing reused content: Title (name of the work), Author/Creator (who created it), Source (where it can be found), License (name and link to the license), and Copyright Year (if applicable). This ensures proper credit is given to original creators while complying with license requirements. When adapting materials, include a brief description of modifications made. Authors may also provide preferred attribution formats, which should be followed when available.

The TASL approach provides a standardized method for attributing creators when using or licensing works. It stands for Title (accurately quoting the work's title), Author (identifying the creator), Source (providing a URL to the original work), and License (stating the license name and URL). This approach applies to both one's own work and others' work, ensuring proper attribution regardless of the context.

A complete formal attribution statement should include four elements remembered using the acronym TASSEL: T for Title (the title of the article or work), A for Author (the person or institution releasing the research), S for Source link (a link back to where the source can be found), and L for License or legal terms (including a hyperlink to the Creative Commons website explaining the full context of the license).

The CC Adapter's License Chart determines permissible licenses for adaptations of existing CC works. Users consult the chart based on the original work's license status to see which licenses are permitted (green), recommended (yellow), or prohibited (gray). The CC License Compatibility Chart determines whether two CC licensed works can be legally remixed into something entirely new. Works with identical licenses can be remixed, but combining works with different NC or ND restrictions may be prohibited. These charts help avoid legal conflicts when creating derivatives or combining multiple CC licensed materials.

This section explains tools for managing multiple licensed works. The Remixer's License Chart shows which license combinations are compatible when mixing different works. The Adapter's License Chart determines permissible licenses based on original works' licenses. A practical example demonstrates combining public domain and CC BY works, showing how the most restrictive license (BY-SA) limits the entire album to that license. This illustrates the principle that derivative works inherit the most restrictive permissions of their source materials.

Remixes are extensive adaptations where original works cannot be distinguished within the new work. Remixes require attribution of all original works and cannot use works with ND licenses. The license for the remix must be compatible with all source works' licenses. The more permissive the source works' licenses, the more options available for the remix's license. A compatibility matrix shows which combinations of source licenses allow for remixing and what licenses can be applied to the resulting work.

When reusing learning materials, distinguish between combining (using pieces as-is in their original context) and remixing (adapting materials into new versions). Combining allows using materials under most licenses together. Remixing requires ensuring license compatibility—the new adapted work must use a license compatible with all source materials. For example, CC BY-SA materials cannot be combined with CC BY-NC materials. Always check license compatibility tables before remixing to avoid legal issues.

Adaptations, remixes, and derivatives are synonymous under CC licensing. An adaptation is a new work derived from copyrighted material with sufficient original contribution to warrant copyright protection. Definition varies by jurisdiction and relies on case law. If any original work has ND, you may adapt only privately. If any has NC, your adaptation cannot be used commercially. If any has SA, your adaptation must use compatible licensing. Cropping images may constitute derivative works. Always verify compatibility before remixing, and consider fair use as an alternative approach when appropriate.

Open Educational Resources (OER) mirror the Open Source software movement, where global collaboration through revision, reuse, remixing, and redistribution improves quality, security, and performance; educators can adopt similar principles by establishing learning networks, sharing resources early and often, and supporting collaborative knowledge exchange to enhance educational outcomes.

OpenCourseWare created the Open Educational Resources (OER) movement, which began at a UN conference discussing MIT's initiative. What was once questioned (whether free educational material could exist on the internet) is now standard practice. MIT's institutional endorsement legitimized this movement globally. The future challenge lies in making existing raw material more usable through better organization, quality standards, and certification systems.

Open Educational Resources (OER) are digitized educational materials offered freely and openly for educators, students, and self-learners to use and reuse for teaching, learning, and research, including learning content (courses, courseware, content modules, learning objects, collections, and journals), tools and software, and implementation resources. OER are categorized into subject-specific repositories (containing research outputs of specific disciplines) and institutional repositories (containing research outputs of institutions like universities). Open access sources in STEM subjects include arXiv, New England Journal of Medicine, and PubMed Central, while social sciences and humanities resources include SSRN, RePEc, and Berkeley Electronic Press. These resources are crucial for students, teachers, and researchers as they provide access to free and quality educational materials, though they are often funded by tertiary institutions, research bodies, and authors.

Open Educational Resources (OER) are freely accessible educational materials that can be used, adapted, and shared by anyone. Major OER platforms include Wikipedia for general content, Project Gutenberg with over 60,000 free ebooks, MIT OpenCourseWare for full course materials, and CNX for various educational resources. To discover OER, educators can use the OER World Map (oerworldmap.org) for finding resources by type and source, or the University of Pittsburgh's LibGuides (pit.libguides.com) for categorized access to complete courses, open access books, and multimedia repositories. These resources support content creation, MOOCs, and classroom instruction across all educational levels.

Open Educational Resources (OER) are teaching and learning materials that are freely available for use, adaptation, and sharing under open licenses, unlike free resources which may require explicit authorization from authors; OER are part of the global open education movement that promotes freedom of use, reuse, and adaptation, supporting educational equity, accessibility, and flexibility across different devices and contexts.