Abacus variants

A variety of Abaci for a wide range of teaching purposes.
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Unlike regular abaci these designs feature toothed rods so that the beads won't slide or move if the frame is bumped - perfect for young users!

Different bead varieties with optional raised numbering from 0-9 are available: or a more traditional smooth variety is also supplied!

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Contents:

Abacus - 1-Rod
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For the younger users: only one rod (for numbers from 0-9) Uses base 5: so use the base-5 beads + blank!