Master addition and subtraction strategies and increase math fact fluency with the posters, worksheets and work mats in this HUGE resource! You'll love the spiraling review built into this program - teach 19 strategies independently then practice them with previously learned skills. Includes:Work mats with number lines, base 10 blocks, part part whole chart, & ten frames,Tracking pages for students to chart their knowledge,19 strategies with teacher directions,46 strategy posters perfect for