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love this product Math Trekker™Addition & Subtraction

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Product Description:

This math trekker means addition and subtraction practice anywhere. It works just like ordinary flash cards, but the pocket-friendly size and electronic system make it easier to take on-the-go.

  • 4'' W x 6'' H x 1.2'' D
  • Plastic
  • Requires three AG13/LR44 batteries (included)
  • Recommended for ages 6 years and up
  • Imported