This Promethean ActivInspire flipchart introduces the concept of Elapsed Time using the Tic Tac Toe Strategy. If you haven't heard of this strategy, it is marvelous! I can't really explain it in the description because it is in the flipchart in very easy-to-follow step-by-step directions. Elapsed time can be a difficult concept, but not when you use this strategy. I have used it very successfully in my classroom for three years now.
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