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Raindrops 2pcs Portable Plastic Abacus Arithmetic Soroban Kid s Calculating Tool 17 Digits
Description The 17 digits abacus also called a counting frame is a calculating tool where beads are moved and by feeling and looking at the beads complex calculations are made. Calculations made by the abacus /soroban is a integration of mind ....
$14.27 Delivery: $3.99
