Estimation (Addition and Subtraction) Center
1. Print out the document.
2. Laminate the document (for durability).
3. Label an envelope or baggie with the name of the center.
4. Cut out the directions (as one card) and put in the baggie.
5. Cut out the problems and put them in the same baggie.
6. Put the baggie in a math center basket (or wherever you have your individual centers).
7. Before allowing students to work with the centers, explain what is expected of them.