Foreign Customer Review / 国外客户评价: |
| They're busy and they're zippy They're happy, bright, and dippy. They're friends who play and laugh all day-- Why are these dinos dizzy? This sturdy board book has a plastic carrying handle and colorful dinosaur-shaped beads on a built-in abacus. As the bouncy rhyming story progresses, kids can move the dinos one at a time along the abacus. This book introduces the concept of addition, spread by spread. The final spread introduces subtraction as the dinos move back to their starting points. |
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