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The Sunken Number Vault - Brandon Robert

The Sunken Number Vault

By: Brandon Robert

eBook | 11 April 2026

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The Sunken Number Vault is an illustrated math storybook for grades 2-3. Join Leo and Countdown on an underwater adventure where number puzzles control the water level. Features interleaved practice activities, vocabulary building, comprehension questions, and reflection prompts. Perfect for classroom read-alouds, independent reading, or homework.

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Kids & Children's BooksEducational MaterialMathematics & Numeracy Educational Material

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