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K-12 Open Education Resources: Home

Understanding OER

"Understanding OER" by SMU Libraries licensed under CC BY

OER Materials

For additional resources, especially on a college level, check out the Open Education Resource Research Guide

What is ZTC?

Zero Textbook Cost (ZTC) materials are items that do not fall under OER, but do not cost the student money. One common example is items from library databases, such as articles, books, or videos, or materials that are used in place of textbooks. Someone might pay for access to these items, but it is not the student. While not a true OER because the item may have copyright restrictions, curricular support materials used in this manner still achieve the goal of saving students money. Contact your librarian to discuss how library resources can support your course.

Examples of ZTC resources:

  • Libraries
  • Historical Societies
  • NASA
  • Smithsonian
  • History Channel
  • YouTube
  • Discovery Channel
  • Library of Congress
  • Khan Academy


Licensed by Stephanie Pennucci under CC BY 4.0


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