First graders played a game called Cover A Mat using Base Ten blocks during math today. With a partner, they rolled two dice, collected that many "single 1s", and traded in for "sticks of 10s" whenever possible. After each turn they needed to count up their total and record it. This went on until they could trade in for a "mat" of 100. By using this concrete model, students continue to build their conceptual understanding of place value and our base ten number system.