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Crystal Demonstration for Second-Graders
On February 4, Jason Greenwood and Dennis Krohn (St. Petersburg, FL) presented a demonstration on crystals for students in the Gifted Program at McMullen-Booth Elementary School in Clearwater, FL. The second-grade class was studying how to grow crystals in space. The children examined several common minerals, such as table salt and calcite. The cubic form of halite that appeared under the microscopes fascinated them. Most of them were amazed to learn that such beautiful, well-formed crystals could grow naturally. The most popular crystal was a large optical-grade calcite rhombohedron.
Jason showed his wonderful collection of minerals, and his training with the hard rocks in Idaho really helped with the nonstop questions the kids asked. The children were highly advanced for second grade. After class, Jason and Dennis helped the teachers identify the crystals the class had grown.
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in this issue:
Radio Interview Explores African Dust Florida Coastal Storm Defenses Crystal Demonstration Environmental Academy Web Site Congressional Briefing—Sea Otter Research John Hughes Clarke—"Imaging Water Mass Variability"  |
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U. S. Department of the Interior | U.S. Geological Survey
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