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
Crystals grown in a bowl by the students. The crystals formed at room temperature from various
solutions of nontoxic mineral salts and dyes.
Jason Greenwood shows children a large rock encrusted with amethyst crystals.
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.
in this issue:
African Sahel Dust
Radio Interview Explores African Dust
Florida Coastal Storm Defenses
Oceans Day 2002
Black History Month
Environmental Academy Web Site
Regional Science Fair
Congressional BriefingSea Otter Research
Law of the Sea
Bill Dillon Retires
John Hughes Clarke"Imaging Water Mass Variability"
March Publications List