Solids, liquids, gases: changing state -- Chemical changes: fireworks -- Hot air balloon -- Energy: moving toys -- Friction: slipping & sliding -- Gravity: faster & faster -- Machines: making it easier.
Summary:
Students will witness clear demonstrations of processes such as changes in matter, the chemical nature of fire and decay, and how energy, friction, gravity, and machines work. -- publishers website.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.