Sir Cumference and the Dragon of Pi

Sir Cumference and the Dragon of Pi


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For fans of the Sir Cumference series with Pi on their mind, here is the second installment in this fun look at math and language. This time the math adventure is centered around a potion that changes Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles. Perfect for parent and teachers who are looking to make math fun and accessible for everyone.

Product Details

ISBN-13: 9781570911644
Publisher: Charlesbridge
Publication date: 02/01/1999
Series: Charlesbridge Math Adventures Series
Pages: 32
Sales rank: 50,477
Product dimensions: 8.32(w) x 9.50(h) x 0.14(d)
Lexile: AD600L (what's this?)
Age Range: 8 - 11 Years

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.

Read an Excerpt

Sir Cumference and his son, Radius, sat in the shade of a tree, enjoying a delicious midday meal. Partway through the lunch, Sir Cumference grabbed his stomach and doubled over in pain.

Excerpted from "Sir Cumference and the Dragon of Pi"
by .
Copyright © 1999 Cindy Neuschwander.
Excerpted by permission of Charlesbridge.
All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

Customer Reviews

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Sir Cumference and the Dragon of Pi 3.3 out of 5 based on 0 ratings. 24 reviews.
Anonymous More than 1 year ago
Terrific book for intro to terminology.
Guest More than 1 year ago
this book is great for any one who is studying curcomfrence.
Arianna21 on LibraryThing More than 1 year ago
Plot- Man vs. NatureFantasy- The boy's father turned into a dragon and his son had to find a potion to save him from being killed by the king's knights!
katitefft on LibraryThing More than 1 year ago
This story is wonderful modern fantasy story that involves a young boy's father being turned into a dragon. It his quest then to save his father through finding the circumference of a circle. The geometric concepts present in this book make it a wonderful informational book as well. This story makes math fun and exciting for students. It is a great tool for teachers and parents to use in helping children understand math that is sometimes very difficult to understand.
MesserPicks on LibraryThing More than 1 year ago
Another great addition when discussing Pi. Can't say enough great things about this series!
stharp on LibraryThing More than 1 year ago
This book is really great for getting kids who love to read, into becoming interested into mathematics. There is something captivating about being covertly educational while still being fun and exciting.
chelsea6273 on LibraryThing More than 1 year ago
This was the story of Sir Cumference and his son, Radius. The illustrations, which are by Wayne Geehan, are truly beautiful. I could imagine a child staring at the pages, being able to figure out the story from just the pictures. Though the story was fictional, it was a great way of explaining the mathematical concept of ¿pi.¿
ssandoe on LibraryThing More than 1 year ago
SIr Cumference and the Dragon of Pi: A Math Adventure tells the story of Radius, the son of Sir Cumference, who desperately seeks the right amount of medicine to serve his ill father. One day when Radius and Sir Cumference were enjoying a quick meal the king developed a terrible stomach ache and the doctor was no where to be found. After the first potion turned Sir Cumference into a dragon Radius was determined to find the correct medicine - and find it fast! As Radius hurried to find a cure for his father he encountered his cousin, Lady Fingers, needed his assistance in order to finish placing the last part of the crust on her last pie. By observing the number of pieces of dough that were needed to form the circumference of the pie and noting the relationship between the circumference measurement and the pieces that extended from one side of the pie to the other (the diameter measurement) Radius rushes able to save his dad before the knights destroy him forever! This short story is ideal for supporting math curriculum in 3rd grade. Third grade is the time when Geometry becomes a strong focus - typically in the third and fourth quarters - and this book serves as a powerful and interesting tool for all students - especially those interested in fantasy. This book provides visual representations for students (they can see the pie and measurements of various circular objects) and describes how Radius goes about using measurements and division to solve his problem (divides circumference by diameter). It is a book that can be paired with manipulatives (students could use rulers and various circular items) and has a story line that engages students - if Radius does not figure out the correct amount in time the king will not be able to return to his human appearance! One additional perk this book offers is that it is one book in a series. I encourage teachers to collect the entire series so that as students learn different geometric ideas they can find the appropriate Sir Cumference book that can get children excited about math yet help them learn simultaneously!
GratefulGrandma More than 1 year ago
This is a great book to help children understand the meaning of Pi. It is an entertaining story about a young boy (Radius) who tries to reverse a situation where his father (Sir Cumference) has been turned into a dragon! His father is in danger as the queen has sent out word that there is a dangerous dragon that needs to be killed. Poor Radius must work fast. The antidote must be measured using a riddle about circles and their measurements. Within the story we meet brothers Geo and Metry, a wheel maker, Sym, Lady Fingers who is baking pies, and Lady Di of Ameter. Students will enjoy the story and at the same time learn about Pi! There are various activities that can be done with this story, especially having the students recreate what Radius does to find the measure of Pi. A wonderful math story! The vocabulary contained in the story in a fun way is a great way to introduce some of the math concepts. The illustrations are wonderful and show the concept of Pi being discovered as well as being fun and imaginative. This is a great book for school libraries and in particular middle grade classes as they learn about the concepts mentioned in the book.
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I love Sir Cumference and the Dragon of Pi. Every year, I read it out loud to my 6th graders on Pi-Day (3-14 or March 14th). We have a great discussion about the characters and their names (which are math specific vocabulary words). The books helps my students understand that Pi is the ratio of a circle's circumference to its diameter. Some students still don't make the connections after they complete a math discovery lab, but they all understand after we finish reading the book. This year, I could not locate the hard copy of the book (there was a substitute in my class during my Maternity leave and it is missing). The Barnes and Noble, by my home, was out of stock, so I purchased it online. Beware; This book doesn't open with an I-pad or on a desk top. You must have a Nook!!! I have wasted my money.