3 years & up. Help your children practice counting with this colorful Wooden Abacus Classic Bead Counting Frame for Practicing Early Math Concepts. This abacus includes 10 beads that slide on 10 steel rods in a sturdy wooden frame. This activity encourages fine motor skills and color recognition while illustrating mathematical concepts. Beads are white, yellow, red, blue, and green. Abacus measures 12"H x 12"W x 3"D.