20 Bead Abacus (2 styles)
The 20 Bead Abacus is an idea resource for children to explore individually or in a small group the five and ten structure of numbers. Using these numbers as reference points, children can combine and partition numbers to investigate efficent strategies for counting, addition and subtraction.
The frames and beads are made from reconstituted wood .
Frame size 45 x 240mm. Bead size 13 x 11mm.
They can be used in either an upright position or laid flat on the desktop.
Available in 2 styles.
Made in Germany.
|ACMNA002, ACMNA004, ACMNA289, ACMNA012, ACMNA029, ACMNA030|