Day 3 - Add/Sub integers with chips - keep modeling #Teach180 #iteachmath @mathequalslove
— Joy Kranefuss (@placej13) August 16, 2017
Day 3 - Add/Sub integers with chips - keep modeling #Teach180 #iteachmath @mathequalslove
— Joy Kranefuss (@placej13) August 16, 2017
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