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Donut Abacus

Donut Abacus

Counting, adding and subtracting is practical and enjoyable with this series of new & colourful abaci. Tactile and easy to grasp donuts, stands, posts and number tiles allow students to explore and record the results of their number investigations in a convenient, concrete and visual way.Place Valu ...Read more
$26.00


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Counting, adding and subtracting is practical and enjoyable with this series of new & colourful abaci. Tactile and easy to grasp donuts, stands, posts and number tiles allow students to explore and record the results of their number investigations in a convenient, concrete and visual way. Place Value is important: A donut on the right-hand post has a value of 1. On the middle post, it has a value of 1 ten. On the left-hand post it has a value of 1 hundred. Join another stand to extend into thousands, tens of thousands, etc. Add a decimal point to the ones column digit and make numbers smaller than one!!! The posts hold EXACTLY 9 DONUTS because the largest digit in any column of our number system is 9.
Explore how the change from 9 to 0 adds a donut to the next post.

MADE IN AUSTRALIA

Contents:
1 abacus stand,
3 posts
27 donuts
3 complete sets of hot-stamped 1-10 number tiles.
Teachers Guide

Age: 7+

Weight: 253 g
Width: 12 cm
Length: 19 cm
Height: 3 cm
Brand: Geo AustraliaGeo Australia
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