JoinTried and True: It's a gas! An exploration of the physical nature of gases
Gases present something of a paradox for the casual observer--they are everywhere and yet, it remains difficult to see them anywhere. This instructional sequence engages middle school students in the inquiry process, enabling them to develop more robust conceptualizations of gases and their properties. Presented in this article are three activities structured as a series of exploratory, hands-on exercises and demonstrations, ordered so that they build upon one another.