"PARKWAY PLASTICS, INC."

Multifunction Capability in One Affordable Instrument

Wack n' Crack Geodes features geodes filled with crystals just waiting to be cracked open.

Teach students how crystals form in nature.

Kids chip away at the plaster fossil block to reveal the rocks and minerals.

Recreate the spectacular sight of an erupting volcano with this kit, developed by a Smithsonian Volcanologist.