Teach position value, addition and subtraction, and visualize (large) numbers.
Demonstrate the "borrowing" principle in the next column. Unused beads disappear behind the wooden partition. This abacus represents units, tens, hundreds, thousands and tens of thousands.
It contains 5 x 20 beads in 6 colors grouped by tens.
Contents:
- Wooden abacus with partition (29 x 21.5 x 9 cm)
- 100 flat plastic beads in 6 colors (2.6 cm Ø)
