NUMBER PEBBLES SUM-BUILDING SET
Containing both number and operation pebbles, this set creates a playful way for children to explore sums. Cast from a durable resin and stone mix, each pebble is engraved. This set contains 50 pebbles - 2 each of numbers 0-20, +,-, = and 1 each of x and ÷. Ages 3+.
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