Tactile and easy-to-grasp donuts, stands, posts and hot-stamped number tiles allow students to explore and record the results of their number investigations in a 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 one’s 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 one donut to the next post.

Material: Engineering ABS

PACK CONFIGURATIONS:

6-010 Donut Abacus in a polybag
Contents: one abacus stand, three posts, 27 donut-shaped rings and 3 complete sets of hot-stamped 1-10 number tiles.

6-012 Donut Abacus Large Class Set in a clear plastic storage tub.
Contents: 9 stands, 27 posts, 243 rings & 270 number tiles (3 complete sets of each colour combination and a teacher's guide.)