Didax Slide Abacus (discontinued) category-magnetic-labels Reinforced stitched edge for longer

Reinforced stitched edge for longer product life

Happy Birthday

- 13" diameter

for example

The polished brass surface is perfect for engraving

Didax Slide Abacus (discontinued) category-magnetic-labels Reinforced stitched edge for longerA hands on tool to represent numbers without the use of place value! This modern version of the abacus has beads in five colors and number grids horizontally and vertically on the outer edges of the 9" x 6" frame. Around the world, many cultures use the abacus in pre schools and elementary schools as an aid in teaching the numeral system and arithmetic. The abacus is often used as a hands on tool to represent numbers without the use of place value.