Explore base 10 number concepts with the whole class—with our giant magnetic ten-frames and counters! Simply stick the ten-frames onto any magnetic surface…then use the counters to explore essential math concepts, including making 10, addition and subtraction, more than/less than, and more! You get a set of 4 ten-frames and 40 counters in 2 colors; ten-frames measure 5" x 12 1⁄4".