Subtracting Integers with @BigIdeasMath and the Matrix from @PBSLrnMedia https://t.co/P5pIxhRTuJ #Teach180 #mtbos http://pic.twitter.com/syEHV5g2bN
— Michelle Bailey (@MichelleBinMA) September 15, 2017
Subtracting Integers with @BigIdeasMath and the Matrix from @PBSLrnMedia https://t.co/P5pIxhRTuJ #Teach180 #mtbos http://pic.twitter.com/syEHV5g2bN
— Michelle Bailey (@MichelleBinMA) September 15, 2017
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