Provide a hands-on, tactile demonstration of early math skills. The ten-frame trays help students practice number patterns, counting, one-to-one correspondence and more. Teach multiplication by connecting the trays together to form 5x5 arrays. Set includes 10 ten-frame trays, 5 five-frame trays, 150 double-sided discs and an Activity Guide. Ten-frame trays measure approximately 6¼ x 2 in. Size: 25.7 x 17.8 x 5.1 cm. Ages 5+.