The teen board and the ten board are technically different materials, but they are used in a similar fashion. The teen board is a wooden frame with ten rows, and a selection of fitting tiles with individual numbers on each. Each row has the number 10 written on the frame, and enough space to insert one of the other number tiles. By inserting a number tile, students can change any of the places where a 10 is written, to a different number in the teens. The tens board works similarly, but rather than 10 being written on each space, they change by 10 units each time. Students combine these boards with beads, bead frames, and writing utensils to explore the relationships between these numbers and quantities, and internalize the next steps in counting.