Photo of a boy using an abacus.

Abacus

An abacus was used for counting and adding up before calculators. It is made from beads on a frame that you slide backwards and forwards.

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Photo by Nicki Dugan

Rhymes with Abacus

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All words: A/B/C/D/E/F/G/H/I/J/K/L/M/N/O/P/Q/R/S/T/U/V/W/X/Y/Z

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