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Sir Cumference And The Dragon Of Pi (Turtleback School & Library Binding Edition) School & Library Binding – April 1, 1999

57 customer reviews

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$14.99 FREE Shipping on orders over $35. Only 4 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Sir Cumference And The Dragon Of Pi (Turtleback School & Library Binding Edition) + Sir Cumference and the First Round Table (A Math Adventure) + Sir Cumference and All the King's Tens (Charlesbridge Math Adventures)
Price for all three: $38.72

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Editorial Reviews

About the Author

Cindy Neuschwander is an elementary school teacher who loves teaching math. She also enjoys traveling, reading, and writing stories. She thought up Sir Cumference while visiting medieval castles in England. Cindy lives in Pleasanton, California. --This text refers to an out of print or unavailable edition of this title.
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Product Details

  • Age Range: 7 and up
  • Grade Level: 2 and up
  • Series: Sir Cumference
  • School & Library Binding: 32 pages
  • Publisher: Turtleback (April 1, 1999)
  • Language: English
  • ISBN-10: 0613352289
  • ISBN-13: 978-0613352284
  • Product Dimensions: 9.7 x 8.5 x 0.3 inches
  • Shipping Weight: 9.6 ounces (View shipping rates and policies)
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (57 customer reviews)
  • Amazon Best Sellers Rank: #1,234,343 in Books (See Top 100 in Books)

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Customer Reviews

Most Helpful Customer Reviews

73 of 73 people found the following review helpful By Doug Little and Anthony Huffman on March 28, 2002
Format: Paperback
Sir Cumference and the Dragon of Pi is the story of a boy that must use math to save his father. Most of the character's names are terms found in math, like Sir Cumference and Radius, which cleverly adds to the effect of the story. The use of a dragon gives the story more of a fantasy feel which appeals to the younger audience. The illustrations in the book are done well and add to the medieval setting of the book because they look like oil paintings. The goal of this book is to introduce kids to the concept of pi in a fun and easy to understand way. It pulls this off by having a fairy tale setting and actually having a reason to use pi that kids can understand. This book is not a quick read, yet it's not long enough to lose the attention of a child. Even though this is a children's book, it should only be used for older children since it involves division with fractions. Because of this, it works as a great educational tool for those older children by introducing them to a fundamental math term they will most likely use later in life.
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21 of 22 people found the following review helpful By Amazon Customer on January 24, 2007
Format: Hardcover
I feel the age range given on the website should not be ages 4-8. This is appropriate for 8 and up. That said, my 5 year old enjoys it as just a fairy tale and I would not attempt any "teaching" to him. He listens as I read it to my older daughters and maybe it will seep in so when he's old enough to begin measuring, he will easily grasp the concepts.

This is a wonderful book - good illustrations and a clever story. The author works the math part in without it being cumbersome. A few times through this book and your child will have a good grasp of pi. At the least, it will be a good memory trigger if he/she needs help in class.
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23 of 25 people found the following review helpful By Amazon Customer on April 10, 2005
Format: Paperback Verified Purchase
I have use this book in my middle school classroom. The kids enjoy it. Yes, it is silly but heck so are middle school kids! Since reading the book and discussing it, the kids have a much better understanding of what pi really is, instead of just saying about 3.14.
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13 of 13 people found the following review helpful By Boxplayer on March 22, 2009
Format: Paperback
As a fifth/sixth grade teacher, I find all of these "Sir Cumference" books to be interesting to students at every stage of learning about the math concepts they present. This is the one mathematically-flawed book in the series, however, which accounts for the 3 star rating. The young boy, Radius, searches for a cure for his father's unexpected transformation into a dragon, and 3 and 1/7 works as the value for pi needed to restore him to human form. It's a bit nit-picky of me, perhaps, but one of the most essential things a student should learn about pi is that it is a non-terminating decimal value which got a name because it couldn't be accurately quantified. That said, any teacher (or interested parent) could clear up the fuzzy definition. The books are funny, brief, written on a relatively easy level, and -- while most likely to be appreciated fully by students who have already learned the math -- could be enjoyed as stories by even the youngest listeners, as other parent/teacher reviewers have affirmed. This book, like the others, does a good job of using verbal jokes to help secure math vocabulary.
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12 of 14 people found the following review helpful By Belinda M. Close on July 23, 2005
Format: Paperback
My kids love this book! They range in age from an 11 yr old girl to a 3 yr old boy and they all enjoy it! My son loves the story and the knights and adventure. And, he is learning something in the process. My older kids enjoy the story also but on a different level and it also reinforces what they have already learned! What a great concept! I can't wait for more to come out! We already own all 4!
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45 of 59 people found the following review helpful By A Customer on March 24, 2000
Format: Paperback
A young boy gives his father the wrong potion to cure a bellyache, and must solve the riddle of the ratio of a circle's circumference to it's diameter to get the dosage to cure him. I enjoyed the fun names (Geo and Sym, the Metry brothers), but I was disappointed in the author's choice to use 22/7 as the value for pi. If the story hadn't made such a big point of getting the dose correct (or Dad would never be cured), I wouldn't have had any trouble with introducing an approximate value.
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4 of 4 people found the following review helpful By Brent J. Jensen on January 26, 2012
Format: Paperback Verified Purchase
This is a fun and entertaining book that introduces the concept of Pi to younger readers. I actually purchased it as a door prize for my annual 'Pi Day' celebration (yes, I'm a huge nerd when it comes to Pi). The girl who ended up winning it was the 4th-grade daughter of a friend who wasn't all that thrilled in receiving that as a gift (I mean, how about something cool like a video game, or at least candy?!?). However, they later told me that their daughter had enjoyed reading it. Further, she took it to school and the teacher read it to the class and they had both enjoyed it and discussed the concept of Pi as well. I also got another copy to read with my kids and my 4 year-old (an aspiring Pi nerd herself) enjoyed the story and the introduction to what the ratio means--so mission accomplished along those fronts.

Of course, given my huge affinity for Pi, I had to dock it one star because the book states throughout the story that Pi can be calculated as 22/7 (or '3 and a seventh'). While this is certainly a rudimentary approximation, it is by no means an exact calculation (irrational and transcendental, anyone?). It's not until the last page (after the story is over) that it says that "the part to the right of the decimal point is 'about' a seventh". While I realize that the 22/7 simplification is a conceit to make it more accessible to younger readers, it still bugs me every time I read it with my kids. So one star off for pain and suffering :-).
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Sir Cumference And The Dragon Of Pi (Turtleback School & Library Binding Edition)
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