Abacus

Large Rainbow Abacus in FSC Wood Light Pink

Abacus, the oldest gadget on Earth

Large Rainbow Abacus in FSC Wood Light Pink

Custom Wood Abacus - Made in USA - Made To Spec

Abacus style abacus, plastic frame, 13/17 digits for optional A bead above and four beads below Give concrete visual representation of numbers by

Weiye Plastic Abacus Arithmetic Soroban Kid's Calculating Tool 13/17 Digits

Rainbow Bead Abacus – Hape Toy Market

1pc Abacus Math Learning Toy Kids Educational Toys Children Math Learning Tool, Size: 15x15cm

Abacus Explained — Everything You Need To Know - History-Computer

Abacus - Wikipedia

Kids can count on this wooden calculator for years of play and learning! The Melissa & Doug Abacus is beautifully crafted with a solid hardwood base, and 100 brightly colored wooden beads. The sturdy frame holds 10 thick-coated wires with 10 colorful wooden beads on each -- 100 beads in all. Younger kids can slide the beads back and forth to explore different patterns and colors, while practicing their fine motor skills.

Melissa & Doug Classic Toy Abacus

Tools Of The Trade: The Abacus, NPR Article