Students develop addition and subtraction strategies—with an independent learning center that builds skills at just the right pace! Our ready-to-use center comes with everything you need for up to 4 students to work at once, including 4 sets of strategy and answer pieces, a double-sided chart with simple, step-by-step instructions and an answer card for easy self-checking. Plus, the center includes an activity guide and a reproducible write & wipe assessment card to track students’ work!