Blossom Abacus 1+1 Calculation Shelf wooden toy includes 55 colorful beads and 2 interchangeable double-sided wooden boards, featuring addition and subtraction. Made of solid hardwood base and frame that holds 10 thick-coated wires with rainbow beads. High quality wood non-toxic, odourless, safe for child. Smooth polished edges. Not scratch hands. Develop early math, number counting, logical thinking, fine motor skills, hand-eye coordination, pattern and color recognition skills. Delightful and educational gift for kids 3 to 6 years. Bright colors and multiple ways to play.