Monday, November 4, 2013

Monster Manipulatives & Counting Up Subtraction

http://www.youtube.com/v/OPJoon5N3Kc?autohide=1&version=3&autohide=1&feature=share&attribution_tag=2ziAsX9_Rvh8YiTtHrDEZQ&showinfo=1&autoplay=1

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