CK-12 Foundation
Ck 12: Physical Science for Middle School
This digital textbook covers core physical science concepts and includes interactive features, real world examples, and videos.
Sophia Learning
Sophia: Identify Examples of Entropy
This lesson will explain how to identify changes in entropy and provide examples of entropy change.
Curated OER
Ucar: About Temperature
This site from the University Corporation of Atmospheric Research provides a lengthy page covering numerous topics including the difference between heat and temperature, the use of different temperature scales, thermal expansion, how a...