Activities/Abacus: Difference between revisions
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I wonder, should the beads on the fraction abacus vary in size? The halves should be five-bead heights each, for example? | I wonder, should the beads on the fraction abacus vary in size? The halves should be five-bead heights each, for example? | ||
As of v10, the beads are labeled. | |||
[[Category:Activities]] | [[Category:Activities]] | ||