Smart Notebook File, to be used with Communicator Boards, mini white boards, Smart Response, etc. On each page, there is an algebraic expression. Students will determine the category in which the expression belongs: Greatest Common Factor, Perfect Square Trinomial, Difference of Two Squares or None of the Above. The notebook file can be edited or arranged as you like. There are 20 questions in all. Tap on the blue boxes to reveal the answers!