My Ss explained how he uses stand algorithm for addition to figure out subtraction. "I have 6, to get 5, I add 9". #teach180 #elemmathchat http://pic.twitter.com/2RomHIe9Wf
— Lana Pavlova (@TAnnalet) September 15, 2017
My Ss explained how he uses stand algorithm for addition to figure out subtraction. "I have 6, to get 5, I add 9". #teach180 #elemmathchat http://pic.twitter.com/2RomHIe9Wf
— Lana Pavlova (@TAnnalet) September 15, 2017
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