Description: "An abacus (pl.: abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Arabic numeral system.[1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their earliest designs, the beads could be loose on a flat surface or sliding in grooves. Later the beads were made to slide on rods and built into a frame, allowing faster manipulation." This device is recently re-gaining its popularity as a learning technique taught to students to do quick and manual adding and subtracting.
Price: 75 USD
Location: San Gabriel, California
End Time: 2024-12-20T11:13:13.000Z
Shipping Cost: 30 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: China
Culture: Chinese
