Sir Cumference and the Dragon of Pi
A Math Adventure
by Cindy Neuschwander
Charlesbridge Publishing 1999
Great fit for 3rd grade
Reading level and content both target K–3rd grade · ages 5–9
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Genre
Themes
- problem-solving
- curiosity
- family
- bravery
- perseverance
- mathematical thinking
- discovery
- logic
About this book
When Sir Cumference is accidentally transformed into a fire-breathing dragon, his son Radius races to uncover a mysterious number hidden in every circle. Along the way, he measures, experiments, and discovers how circumference, diameter, and pi are connected. This playful, pun-filled adventure makes geometry feel like a quest, perfect for elementary readers who enjoy stories with humor and hands-on math. Parents and teachers love how it weaves real math concepts into a memorable tale without giving away the ending.
Setting: a pun-filled medieval kingdom of knights and castles
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Frequently Asked Questions
Is Sir Cumference and the Dragon of Pi right for my child?
Yes — Sir Cumference and the Dragon of Pi is a great fit for 3rd grade. The reading level is AR 3.4, which is typical for 3rd grade. The interest level is rated Lower Grades (K–3), meaning the themes and content are designed for ages 5–9 (K–3rd grade). Themes include problem-solving, curiosity, family.
How long does it take to read Sir Cumference and the Dragon of Pi?
At a typical 3rd grade reading pace, Sir Cumference and the Dragon of Pi takes around 10m to finish. The book has 1,400 words. Slower or faster readers may vary significantly.
Does Sir Cumference and the Dragon of Pi have an AR quiz?
Yes — Sir Cumference and the Dragon of Pi has an AR quiz available, worth 0.5 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Sir Cumference and the Dragon of Pi?
Sir Cumference and the Dragon of Pi has an AR reading level of 3.4, which places it at a 3rd grade reading difficulty. The interest level is rated Lower Grades (K–3) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.