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182-Obsidian Grades 3-8 $7.00
Mystery includes rock, fossil, or mineral sample and Mystery questions with teaching instructions.

SAMPLE:
A piece of Obsidian with sharp edges

TEACHING OBJECTIVES:
To introduce the volcanic glass, Obsidian
To portray the idea that glassy lava can be caused by the rapid cooling of stiff, viscous (thick and sticky) volcanic flows.
To introduce the concept of tool usage by early civilizations

GRADES 3-8
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Ruth Deike
Rock Detective Geoscience Education
395 Deer Run Drive
Nellysford , VA 96080

Phone: 434-263-3737

EMAIL:

 

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