Day 6: #Teach180 Ss learn add/subtract integers with the hot air balloon model #mtbos #math7 #iteachmath http://pic.twitter.com/r4mLvcbfXN
— Richard Hung (@rnhung) August 23, 2017
Day 6: #Teach180 Ss learn add/subtract integers with the hot air balloon model #mtbos #math7 #iteachmath http://pic.twitter.com/r4mLvcbfXN
— Richard Hung (@rnhung) August 23, 2017
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