Rube Goldberg machines. #makingintheclassroom http://pic.twitter.com/nU6FoGYkwO
— Bekka Stasny (@ascienceteacher) October 17, 2015
from Twitter https://twitter.com/ascienceteacher
October 17, 2015 at 09:59AM
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Rube Goldberg machines. #makingintheclassroom http://t.co/nU6FoGYkwO
October 17, 2015Our class