This set includes 231 rods that are comprised of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 cm lengths. The set also includes 50 double-side, full color activity cards and 1 activity book. Number Rods help children visualize counting to 10. Each quantity is a different color and scored in 1cm, which helps with number identification and comparison. Teach children how to add, subtract and measure with the included activities. As children learn with the rods, they will improve fine motor skills, hand-eye coordination and logical thinking. Packaged in a sturdy plastic container for easy cleanup, storage and travel. Size of rods: 1cm - 10cm. For ages 3+.