Vintage Chinese Wooden Bead Arithmetic Abacus W. Instruction

This vintage style abacus comes with a beautiful leather surface wooden case in ancient Chinese beau “Size: L14″” x W6.5 x H2″”” The abacus was a calculator invented sometime between 1000 BC and 500 BC in China, often constructed as a wooden frame with beads sliding on wires. It was in use centuries before theContinue reading “Vintage Chinese Wooden Bead Arithmetic Abacus W. Instruction”

Soroban Abacus Mental Math Learning Tool (Includes up to $70 Bonus for fun math learning at MathSecret)

17 stems (columns) of 1 & 4 soroban style abacus. High quality construction, competition grade. Plastic black frame, plastic brown pearls, pressure treated wood stem, and plastic center horizontal divider bar with black dots on every 3 stems. Also includes FREE protective plastic case. Join MathSecret VIP Membership for FREE and get up to bonusContinue reading “Soroban Abacus Mental Math Learning Tool (Includes up to $70 Bonus for fun math learning at MathSecret)”