A set of 80 brightly coloured plastic beads numbered 1-20, plus 4 laces for threading the beads.
One side of each bead is printed with the number enabling the teacher to reverse beads in a sequence and hide a number so children have to identify the missing numbers.
Compatible with Number Beads 1-10 (CV164).
Size: 2.5cm
Age: 3 years+
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