# OER Quality and Adaptation in K-12: Comparing Teacher Evaluations of Copyright-Restricted, Open, and Open/Adapted Textbooks

> Research article (The International Review of Research in Open and Distributed Learning, 2015) · cited 62× · AI/ML

**Wikidata**: [openalex:W1809513418](https://www.wikidata.org/wiki/openalex:W1809513418)  
**Source**: https://4ort.xyz/entity/oer-quality-and-adaptation-in-k-12-comparing-teacher-evaluations-of-copyright-restricted-open-and-open-adapted-textbooks