Make mastering numbers fun and interactive with these specially designed double-sided whiteboards! Each board features a durable, non-ghosting, write-on/wipe-off surface that stays bright and clean through frequent use. The front side is tailored for building number sense, with dedicated spaces for ten-frames, tally marks, written numbers, and more. The blank reverse provides room for additional practice or creative activities. With rounded corners, these boards are safe for learners of all ages. Each set contains 10 double-sided whiteboards.