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Persell Middle School Holds Family Expo

June 2, 2013
The Post-Journal

"If we put dry ice in the sink, it is more dense than the air we breathe, so it hovers like you see in the movies or at concerts," said Mary Maggio, Persell Middle School teacher. "If you blow on it a bit, it will billow up over the counter."

 
 
 

 

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