Friday, October 1, 2010

Shells and Rocks

Second Grade scientists have been exploring the question, "What is the difference between rocks and shells?"  In order to investigate this question, the students acted out an experiment in which they placed different rocks and shells in water.  Each student practiced making a prediction about what they thought would happen when they placed the objects in the water.  The students found that most shells could float, where there was only one rock, a pumice stone, that floated.

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