STC Program: Changes, 3rd Edition
Developing their knowledge of states of matter, students learn to describe the properties of solids, liquids, and gases and categorize them by their identifiable properties in Changes. Students investigate the freezing, melting, evaporation, and condensation of water as an introduction to phase change. Rusting, dissolving, crystallization, gases created by effervescent tablets, and ink separated through chromatography are other phase changes students create and observe in the lab.
STC Program: Changes Two-Use Unit Kit, 3rd Edition
STC Program: Changes Two-Use Refurbishment Set
STC Literacy Series™: Changes, Pack of 8
STC Literacy Series™ Changes eBook
STC™ Changes Interactive Whiteboard Activity