I purchased six 4x8 foot sheets of melamine and made table tops out of them. I set the tops over each group of desks in my room. Anytime we are doing a guided practice or a review session, the students use white board markers and erasers to write their steps for solving the problem on the tabletop. It is easy for me to see and check their answers because of the visibility and the size of the print. Students love it because they can make a mistake and fix it easily. When I visit a group to explain a problem, I can easily write large enough for all the group members to see. In order to prevent cheating among group members during tests, I asked the industrial technology class to make blocks of wood about 2x5 inches with a slanted groove in them that is wide enough to put a divider board in between each student. The use of white board tables has helped me capture the idea of a classroom conducive to learning, to sharing and to teaching one another!