Use this classic manipulative to help your children see, feel, and understand the base ten number system. These high-quality rod components clearly model tens and decimal numbers and when used with cubes, flats, and a block are perfect for teaching counting, grouping, place value, numeration, and other base-ten concepts. Includes 50 - 10 x 1cm precision-tooled plastic yellow rods. Rods are scored to clearly represent ones.