Frame Abacus (wooden) With Beads:This wooden Abacus with 10 wire and 10 dots in each wire in 10 distinctive shading dots is a "number cruncher" that shows math abilities, example and shading acknowledgment Counting Abacus (wooden) With 55 Beads:This is sober wooden edge math device with 10 wire, first wire contains 1 bead and tenth wire contain 10 beads in rising order.
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