Sir Cumference and the Isle of Immeter
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Sir Cumference and the Isle of Immeter (Sir Cumference (Math Adventure) #3)

4.08 of 5 stars 4.08  ·  rating details  ·  155 ratings  ·  28 reviews
When young Per visits her uncle Sir Cumference and his family, she learns how to play the game, "Inners and Edges." After she finds a clue linking the game to the mysterious castle on the island of Immeter, she must figure out how to find the perimeter and area of a circle to unlock the island's secret.

Math skills taught include finding the area and perimeter of a rectangl...more
Paperback, 32 pages
Published July 1st 2006 by Charlesbridge (first published January 1st 2006)
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Community Reviews

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Back in the days of Camelot, people knew geometry, but they learned it in adventures instead of textbooks. Per of Ameter played a game created by the Countess Areana in which they figured the outside edges and inner pieces of shapes made with the same size squares. Their skill at this game allowed them to solve several mysteries on the Isle of Immeter through a few escapes, as the island was protected by a sea dragon. Finally Per solved all the puzzles, and the sea dragon delivered a locked from...more
Jennifer Weiss
Sir Conference and his fellow family and kingdom go on another math adventure. This time to lean about perimeter. In this book, not only does it give an example of what perimeter is from the very beginning of the book, mentioning the square game at the beginning (the teacher gets the inside, the student gets the outside, which is the perimeter) Then, in Per's dream, she needs to solve several mysteries that involve perimeter or circumference. There are hands on activity ideas included in the sto...more
My kids (almost 7 yo ds & 4.5 yo dd) absolutely love this series with Sir Cumference. (I like it too) We have read the series twice in less than the past 24 hrs!! ds rated the series as a whole 9 stars out of 5 which says alot as he usually gives everything 3.

Who knew that geometry was so much fun!! Fun & easy learning about area & perimeter (inners & edges in this cute book. What's not to love with a sea serpent, a mysterious message, with clever participants with names like Per...more
Best for kids ages 6 and up.
Early Literacy Skills: Vocabulary, Narrative Skills

From cover:
Who can solve this circular mystery?
Young Per loves to play games. When she visits her uncle Sir Cumference and her aunt Lady Di of Amerter, they teach her a new game. But the game has a hidden message that points to a mysterious island.
Per and her cousin Radius set sail for the Isle of Immeter. Can the cousins unlock the secret of Immeter before the fearsome sea serpent finds them?

Another math adventure wi...more
Feb 12, 2010 Dolly rated it 3 of 5 stars
Recommends it for: parents reading with their children
We discovered these books about Sir Cumference on the "Tumblebooks" online audiobook site ( Our girls really enjoyed watching them read aloud. Although I think the math concepts regarding geometry are a little more difficult to understand for children in grades K-2, I think it was a valuable way to introduce the concepts. Because the story itself is fun, it makes the educational focus of the book less apparent and more appealing.
A teacher read this in a class I interned in and it was really unfortunate because she read another book in the series too. It was so clear the kids were all bored--staring off, falling asleep, the minutes going by painfully slow. This was a fourth grade class. Some of the stuff in there was way above their level, so the book doesn't even know who it's aimed for. I can't believe someone put this on an educational children's book list--it's written by a person who doesn't know how to write educat...more
Jayetta Carter-mcfarlin
This is a good book for a read-aloud experience with students in grades 3 - 5. The book is engaging, and young learners will enjoy the mysterious adventure in the book as Per solves perimeters and areas of more complex figures that are key-shaped during his adventure. In addition, the concept of circles and finding the area and perimeter of circles are introduced in this book. This book is great for expanding young learners' math vocabulary, too.
Today i read this this and its so interesting. This book is about math. In this book young boy and girl have to find a key and they have to unlocked the door and they will win. They think they can't do that but they do. They try their best and they find the key. They went to their house and they tell the story which how did they found the key and how they win. Their parent so proud with them and they so happy of that.
In this installment of the Sir Cumference tales, Radius and his cousin Per head off to the Isle of Immeter to explore and review some basic measurement concepts all the while pursued by a sea monster. The book covers area and perimeter of rectangular shapes and derivation of the area of a circle. Good stuff.
Great story about the parts of a circle and how to find perimeter and area. Broken down into pieces that could be used for students to solve with out the formula and then using the formula.

6th Grade Common Core Standards:

*Available at Albuquerque/Bernalillo County Libraries*
This is a cute math story that uses elements from the stories of King Arthur to teach students about geometry. This book's focus is on area and perimeter. There is also a lot of multiplying going on in this book.
Julie Suzanne
This one is an adventure that teaches about finding the area of circles and other objects as well as the perimeter (but not the circumference; see dragon of pi for that one).

Megan Skyrm
This is another great book for vocabulary with a built in activity for the class. You could also talk about fractions and relationships between different shapes.
Jo Oehrlein
One of the better Sir Cumference stories. It's an adventure and a puzzle hunt, with the answers found by playing a game of insides (area) and outsides/edges (perimeter).
Michelle :)
I loved the way these stories are told. They are a fun way to learn math and also tell it in another way that I have never thought before :)
Fantastic series! This particular book helped my class truly understand the difference between perimeter and area.
Jazelle Washington
It was about the characters finding perimeters and areas to discover the secret key to the Isle of Immeter.
Very much a math adventure--with an emphasis on math. Would be really good if trying to teach kids concepts.
Love the whole "Sir Cumference" series -- great math concepts/vocab wrapped up in fun stories.
This book covers area and perimeter with an action-packed adventure. This series is so fun.
area, perimeter. estimating area of circle by cutting it into sections.
realtion between cirlce and rectangle....derivation of 2 pi r formulaa...
Tiffanni Dean
Can be used to discuss counting as well as terms in geometry.
This one was harder to get, but still really good.
teachers resource about meter mesurement
Julie Webb
Fun story, great geometry!
Great books!
Dec 22, 2013 Joyce marked it as homeschool-past
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Cindy Neuschwander is a native Californian, born in San Diego, CA. Her father was a naval officer and later a high school teacher and her mother was a homemaker. She has one younger brother.

Cindy graduated with a BA in International Studies from Willamette University and earned an MA from Stanford University. She has taught all grades in elementary school as well as high school.

Cindy began writing...more
More about Cindy Neuschwander...
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