Students at PGM deep in thought about the the world's roundest ball! #STEM ROCKS https://t.co/ibPoGDH4Ju http://pic.twitter.com/LheIc5KQPV
— Pine Grove Middle (@PGMVikings) August 30, 2016
from Twitter https://twitter.com/PGMVikings
August 30, 2016 at 04:12PM
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