The Stair consists of 10 joined vertical channels or grooves made of durable plastic in which Unifix® cubes are placed to match the values printed at the top of each groove. Each number is seen as a collection of units that form a composite entity. Ages 5-8.
Prices listed are U.S. Domestic prices only and apply to orders shipped within the United States. Orders from outside the
United States may be charged additional distributor, customs, and shipping charges.