A magical junkyard, a friendly dragon who loves numbers, and a treasure hunt powered by math, logic, and quick thinking. A fast-paced adventure for readers ages 7-10.

Eli and Grace return to the junkyard door and meet the Math Dragon, a wise and gentle teacher who guards a treasure deep within a mountain. To claim it, they must solve number puzzles and math challenges before the treasure disappears forever.

Packed with action, cliffhanger chapters, and real math practice, Math Dragon is an exciting read for kids who love adventure with numbers.

Why parents and teachers love Math Dragon:

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Chapter book for ages 7-10 (works up to 12)

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Reluctant reader friendly: Short, math-driven chapters build confidence

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Educational + fun: Numbers, problem-solving, and math woven into the story

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Classroom ready: Excellent chapter book read-aloud for math lessons


Can Eli and Grace solve the Math Dragon's final challenge before time runs out? Math Dragon is Book 10 of the 10-book Junkyard Adventure series.

The adventure starts here -- order today and start learning! Available in Kindle or print.

• We started tracking this book on January 24, 2023.
• This book was $3.95 when we started tracking it.
• The price of this book has changed 35 times in the past 1,157 days.
• The current price of this book is FREE last checked 3 hours ago.
• The lowest price to date was FREE last reached on March 25, 2026.
• This book has been FREE 16 times since we started tracking it.
• The highest price to date was $3.95 last reached on November 28, 2025.
• This book has been $3.95 17 times since we started tracking it.
• This book is currently at its lowest price since we started tracking it.

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• Literature & Fiction

• Publication Date: July 1, 2022
• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 130 Pages
• File Size: 43 KB