The Abacus and the Numeral Frame

The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines. Learn more

Abacus-World's first calculator

How to mark a unit rod at the abacus - Quora

Counting frame hi-res stock photography and images - Alamy

A wooden abacus, a counting frame, a calculating tool prior to the adoption of the Arabic numeral system. A frame of movable wooden beads Stock Photo - Alamy

Abacus - Wikipedia

Educational Wooden Abacus Math Learning Toy Arithmetic Rack Counting with Multi Color Beads Materials for Holiday Gifts Boys Girls Children Caterpillar

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The Abacus: A Brief Introduction

The abacus, or counting frame, is a calculating tool that was used centuries before the adoption of the numer…

MAGIKON Miniature Counting Frame,5 Rows,Learning Mathematics Abacus : Toys & Games

Cylindrical Numeral Frame or Abacus

The Abacus. Mathematics and Counting. Stock Image - Image of finance, mathematics: 136158629

Construction:this math learing abacus has 10 beads per row and altogether 10 rows,100 beads in total. - Safe material and colorful:this abacus has

MAGIKON Wooden Counting Number Frame, 10 Rows Abacus for Kids Learning Math (11