The abacus has been helping us count for centuries and can be considered the world's first calculator. This Melissa & Doug wooden abacus is a classic way to teach math skills, patterning and color recognition. Slide and count 100 colored beads for great interactive fun. Includes activity ideas. Measurements: 2.95 Width/Inches, 12 Length/Inches, 11.7 Height/Inches Country of Origin: Imported