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calculator for school or homework — image 1
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calculator for school or homework

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This is a simple calculator. The beads can be moved from right to left to add or subtract.

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Model information

Category
Math
License
Creative Commons — Attribution

A simple calculator.

Important: 
The rods have some play on the right and left sides.
This is intentional. Please glue the rods into the holders.

OF COURSE, attach the beads to the rods first ;D
You will need:

2 Stands, 10 Rods, 100 Pearls/beads.

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