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• Math and logic puzzle inspired by the great Greek philosopher Aristotle
• Make every permutation of all fifteen rows add up to 38
• Mathematical concept allows you to complete the puzzle by using every number from one to nineteen
- Laminated poster measures 32" h x 42" w
- Free downloadable app enables you to virtually bring the poster to life
- Interact with the planets, spacecraft and black holes!
- A sliding puzzle where you choose or create your own solution
- Perfect for commuters or doctor's office visits
- No batteries required
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