{"id":1781532737,"title":"Sir Cumference and the Sword in the Cone","handle":"sir-cumference-and-the-sword-in-the-cone","description":"\u003c!-- - - - - - - - ENTER AUTHOR\/ILLUSTRATOR INFO BELOW - - - - - - - --\u003e\n\u003cp\u003eBy: \u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/cindy-neuschwander\" title=\"Cindy Neuschwander\"\u003eCindy Neuschwander\u003c\/a\u003e \/ Illustrated by: \u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/wayne-geehan\" title=\"Illustrator Wayne Geehan\"\u003eWayne Geehan\u003c\/a\u003e\u003c\/p\u003e\n\u003c!-- - - - - - - - ENTER HEADING BELOW - - - - - - - --\u003e\n\u003ch3\u003eFive knights compete for the honor of heir.\u003c\/h3\u003e\n\u003c!-- - - - - - - - ENTER DESCRIPTION BELOW - - - - - - - --\u003e\n\u003cp\u003eKing Arthur has hidden his sword, Edgecalibur and issued a challenge to the knights. The first knight to find the sword will be the next king. Can Sir Cumference and Lady Di point Radius's best friend, Vertex in the right direction? Will Vertex's sharp thinking give him the edge?\u003c\/p\u003e\n\u003cp\u003eJoin Sir Cumference, Lady Di of Ameter, and their son, Radius, as they race to help Vertex find the sword and discover the secrets of cubes, pyramids, cylinders, and cones.\u003c\/p\u003e\n\u003c!-- - - - - - - - - - - - ENTER RECOMMENDATIONS BELOW - - - - - - - -- - - --\u003e\n\u003cdiv class=\"recommended-books\"\u003e\n\u003cp\u003eIf you like this book, you’ll enjoy these:\u003cbr\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/collections\/sir-cumference-math-adventures\" title=\"The Sir Cumference Math Adventure series\"\u003eThe Sir Cumference Math Adventure series\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- - - - - - - - - - - - START OF TABS - - - - - - - -- - - --\u003e [TABS]\n\u003ch5\u003eLook Inside\u003c\/h5\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-in-the-cone-spread.jpg?10886045157444406429\" style=\"display: block; margin-left: auto; margin-right: auto;\" class=\"cvr-border-gray\"\u003e\u003c!-- Please call pinit.js only once per page --\u003e \u003cscript type=\"text\/javascript\" async=\"\" defer data-pin-shape=\"round\" data-pin-height=\"32\" data-pin-hover=\"true\" src=\"\/\/assets.pinterest.com\/js\/pinit.js\"\u003e\u003c\/script\u003e\u003c\/p\u003e\n\u003c!-- - - - - - - - - - - - ENTER AUTHOR BIO BELOW - - - - - - - - - --\u003e\n\u003ch5\u003eAuthor \u0026amp; Illustrator\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eCindy Neuschwander, author\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCindy Neuschwander is a native Californian, but she has lived in many places, including Germany, England, Austria, and Hawaii. As a mathematics education specialist, Cindy sought ways to make math fun, interesting, and comprehensible to her students. In 1992, while living in England, Cindy began working on her first book with this goal in mind.\u003ci\u003eSir Cumference and the First Round Table\u003c\/i\u003e took five years to reach publication, but it remains a very popular book for its presentation of math concepts as well as for its amusing and exciting story. It has been followed by further adventures of Sir Cumference and his family. In her spare time, when she isn't writing or dreaming up new math adventures, Cindy enjoys activities with her family.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/cindy-neuschwander\" title=\"Author Cindy Neuschwander\"\u003eRead more\u003c\/a\u003e about Cindy.\u003c\/p\u003e\n\u003c!-- - - - - - - ENTER ILLUSTRATOR BIO BELOW - - - - - - - - - - - --\u003e \u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWayne Geehan, illustrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWayne Geehan, a graduate of the Art Institute of Boston, has been illustrating books, board games, and jigsaw puzzles for over 20 years. When he isn't painting in his Massachusetts studio, he enjoys being with his family, reading, and researching his family's genealogy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/wayne-geehan\" title=\"Illustrator Wayne Geehan\"\u003eRead more \u003c\/a\u003eabout Wayne.\u003c\/p\u003e\n\u003c!-- - - - - - - - - ENTER AWARDS \u0026 HONORS BELOW - - - - - - - - --\u003e\n\u003ch5\u003eAwards \u0026amp; Honors\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eABC Best Books for Children\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- - - - - - - - - - ENTER REVIEWS BELOW - - - - - - - - - --\u003e\n\u003ch5\u003eEditorial Reviews\u003c\/h5\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eSchool Library Journal\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eNeuschwander retells \"The Sword in the Stone\" from a mathematical angle. Readers follow along with Sir Cumference and Lady Di of Ameter as their son Radius and his friend Vertex set out to find Edgecalibur. Filled with riddles and puns, the story is sure to delight students with some geometry background. Geehan's bright oil, acrylic, and pen-and-ink paintings include all the visual details that the text needs to help solve this geometrical mystery. If your students have enjoyed the first three books in the series, they will certainly want this one. Make sure to share these gems with your math teachers. The books can be used to support educational initiatives such as multiple intelligences, and students who are strong in verbal\/linguistic areas will appreciate the integration of literature into their math lessons.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eDallas Morning News\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eSir Cumference equals circumference, get it? This adventure series about a knight in the time of King Arthur centers on mysteries that can be solved only by using math. The latest book, The Sword in the Cone, is a play on the Arthurian legend, in which a boy named Arthur pulled a sword out of a stone to become king. That sword was called Excalibur; in this book, the sword is Edgecalibur. But the prize is the same: The person who finds the sword will be king. Sir Cumference's son, Radius, and trusty pal Vertex set off to seek the sword with only a clue about \"shapes that make 2\" to guide them. Sound 2 good 2 be true? Read the book, and you'll find it works!\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eChildhood Education\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eIn the fourth book of this series, Radius, son of Sir Cumference and Lady Di of Ameter, tackles a mathematical puzzle that wins his friend, Vertex, the honor of becoming the king's heir. Whimsical illustrations bursting with rich colors entice readers to join the boys as they creatively use models, math, and a little manual labor to find Edgecalibur, the king's sword. Neuschwander, an elementary school teacher, chooses Euler's Law as a starting point for the joureny and cleverly wraps it up with a nod to the future King Vertex, the Line-Hearted.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c!-- - - - - - - - - - - ENTER DOWNLOADABLES BELOW - - - - - - - - - - --\u003e\n\u003ch5\u003eDownloadables\u003c\/h5\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg style=\"display: block; float: none; margin-left: auto; margin-right: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-cone-cover.jpg?v=1629123066\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"btn-wrapper\"\u003e\u003ca class=\"product-btn\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-cone-cover-hires.jpg.zip?v=1629123066\"\u003eDownload the Cover\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"btn-wrapper\"\u003e\u003ca class=\"product-btn\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-and-the-sword-in-the-cone-activities.pdf?17346766377963099232\"\u003eDownload the Activities\u003c\/a\u003e\u003c\/div\u003e\n\u003c!-- - - - - - - - - - - - ENTER DETAILS BELOW - - - - - - - - - - - --\u003e\n\u003ch5\u003eDetails\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003ePaperback\u003c\/b\u003e\u003cbr\u003eISBN: 978-1-57091-601-4\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e E-book\u003c\/b\u003e\u003cbr\u003eISBN: 978-1-60734-560-2 EPUB\u003cbr\u003eISBN: 978-1-60734-148-2 PDF\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAges: 8-12\u003cbr\u003ePage count: 32\u003cbr\u003e8 \u003csup\u003e1\u003c\/sup\u003e\/\u003csub\u003e2\u003c\/sub\u003e x 9 \u003csup\u003e1\u003c\/sup\u003e\/\u003csub\u003e2\u003c\/sub\u003e\u003c\/p\u003e\n[\/TABS]","published_at":"2015-04-06T20:57:00-04:00","created_at":"2015-08-07T15:39:58-04:00","vendor":"Charlesbridge","type":"Children's Book","tags":["Browse by Age_Ages 6-10","Browse by Fiction\/Nonfiction_Fiction","Browse by Format_Picture Book","Browse by Language_English","Browse by Subject_Math \u0026 Counting"],"price":799,"price_min":799,"price_max":799,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":5417518849,"title":"Paperback","option1":"Paperback","option2":null,"option3":null,"sku":"16014","requires_shipping":true,"taxable":false,"featured_image":{"id":28558841741391,"product_id":1781532737,"position":1,"created_at":"2021-08-16T10:12:00-04:00","updated_at":"2021-08-16T10:12:00-04:00","alt":null,"width":600,"height":671,"src":"\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120","variant_ids":[5417518849]},"available":true,"name":"Sir Cumference and the Sword in the Cone - Paperback","public_title":"Paperback","options":["Paperback"],"price":799,"weight":159,"compare_at_price":null,"inventory_quantity":38,"inventory_management":"shopify","inventory_policy":"continue","barcode":"978-1-57091-601-4","featured_media":{"alt":null,"id":20948386152527,"position":1,"preview_image":{"aspect_ratio":0.894,"height":671,"width":600,"src":"\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120"}},"requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120"],"featured_image":"\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120","options":["Title"],"media":[{"alt":null,"id":20948386152527,"position":1,"preview_image":{"aspect_ratio":0.894,"height":671,"width":600,"src":"\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120"},"aspect_ratio":0.894,"height":671,"media_type":"image","src":"\/\/www.charlesbridgeteen.com\/cdn\/shop\/products\/sir-cumference-sword-cone-cover.jpg?v=1629123120","width":600}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003c!-- - - - - - - - ENTER AUTHOR\/ILLUSTRATOR INFO BELOW - - - - - - - --\u003e\n\u003cp\u003eBy: \u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/cindy-neuschwander\" title=\"Cindy Neuschwander\"\u003eCindy Neuschwander\u003c\/a\u003e \/ Illustrated by: \u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/wayne-geehan\" title=\"Illustrator Wayne Geehan\"\u003eWayne Geehan\u003c\/a\u003e\u003c\/p\u003e\n\u003c!-- - - - - - - - ENTER HEADING BELOW - - - - - - - --\u003e\n\u003ch3\u003eFive knights compete for the honor of heir.\u003c\/h3\u003e\n\u003c!-- - - - - - - - ENTER DESCRIPTION BELOW - - - - - - - --\u003e\n\u003cp\u003eKing Arthur has hidden his sword, Edgecalibur and issued a challenge to the knights. The first knight to find the sword will be the next king. Can Sir Cumference and Lady Di point Radius's best friend, Vertex in the right direction? Will Vertex's sharp thinking give him the edge?\u003c\/p\u003e\n\u003cp\u003eJoin Sir Cumference, Lady Di of Ameter, and their son, Radius, as they race to help Vertex find the sword and discover the secrets of cubes, pyramids, cylinders, and cones.\u003c\/p\u003e\n\u003c!-- - - - - - - - - - - - ENTER RECOMMENDATIONS BELOW - - - - - - - -- - - --\u003e\n\u003cdiv class=\"recommended-books\"\u003e\n\u003cp\u003eIf you like this book, you’ll enjoy these:\u003cbr\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/collections\/sir-cumference-math-adventures\" title=\"The Sir Cumference Math Adventure series\"\u003eThe Sir Cumference Math Adventure series\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- - - - - - - - - - - - START OF TABS - - - - - - - -- - - --\u003e [TABS]\n\u003ch5\u003eLook Inside\u003c\/h5\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-in-the-cone-spread.jpg?10886045157444406429\" style=\"display: block; margin-left: auto; margin-right: auto;\" class=\"cvr-border-gray\"\u003e\u003c!-- Please call pinit.js only once per page --\u003e \u003cscript type=\"text\/javascript\" async=\"\" defer data-pin-shape=\"round\" data-pin-height=\"32\" data-pin-hover=\"true\" src=\"\/\/assets.pinterest.com\/js\/pinit.js\"\u003e\u003c\/script\u003e\u003c\/p\u003e\n\u003c!-- - - - - - - - - - - - ENTER AUTHOR BIO BELOW - - - - - - - - - --\u003e\n\u003ch5\u003eAuthor \u0026amp; Illustrator\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eCindy Neuschwander, author\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCindy Neuschwander is a native Californian, but she has lived in many places, including Germany, England, Austria, and Hawaii. As a mathematics education specialist, Cindy sought ways to make math fun, interesting, and comprehensible to her students. In 1992, while living in England, Cindy began working on her first book with this goal in mind.\u003ci\u003eSir Cumference and the First Round Table\u003c\/i\u003e took five years to reach publication, but it remains a very popular book for its presentation of math concepts as well as for its amusing and exciting story. It has been followed by further adventures of Sir Cumference and his family. In her spare time, when she isn't writing or dreaming up new math adventures, Cindy enjoys activities with her family.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/cindy-neuschwander\" title=\"Author Cindy Neuschwander\"\u003eRead more\u003c\/a\u003e about Cindy.\u003c\/p\u003e\n\u003c!-- - - - - - - ENTER ILLUSTRATOR BIO BELOW - - - - - - - - - - - --\u003e \u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWayne Geehan, illustrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWayne Geehan, a graduate of the Art Institute of Boston, has been illustrating books, board games, and jigsaw puzzles for over 20 years. When he isn't painting in his Massachusetts studio, he enjoys being with his family, reading, and researching his family's genealogy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/charlesbridge.myshopify.com\/pages\/wayne-geehan\" title=\"Illustrator Wayne Geehan\"\u003eRead more \u003c\/a\u003eabout Wayne.\u003c\/p\u003e\n\u003c!-- - - - - - - - - ENTER AWARDS \u0026 HONORS BELOW - - - - - - - - --\u003e\n\u003ch5\u003eAwards \u0026amp; Honors\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eABC Best Books for Children\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- - - - - - - - - - ENTER REVIEWS BELOW - - - - - - - - - --\u003e\n\u003ch5\u003eEditorial Reviews\u003c\/h5\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eSchool Library Journal\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eNeuschwander retells \"The Sword in the Stone\" from a mathematical angle. Readers follow along with Sir Cumference and Lady Di of Ameter as their son Radius and his friend Vertex set out to find Edgecalibur. Filled with riddles and puns, the story is sure to delight students with some geometry background. Geehan's bright oil, acrylic, and pen-and-ink paintings include all the visual details that the text needs to help solve this geometrical mystery. If your students have enjoyed the first three books in the series, they will certainly want this one. Make sure to share these gems with your math teachers. The books can be used to support educational initiatives such as multiple intelligences, and students who are strong in verbal\/linguistic areas will appreciate the integration of literature into their math lessons.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eDallas Morning News\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eSir Cumference equals circumference, get it? This adventure series about a knight in the time of King Arthur centers on mysteries that can be solved only by using math. The latest book, The Sword in the Cone, is a play on the Arthurian legend, in which a boy named Arthur pulled a sword out of a stone to become king. That sword was called Excalibur; in this book, the sword is Edgecalibur. But the prize is the same: The person who finds the sword will be king. Sir Cumference's son, Radius, and trusty pal Vertex set off to seek the sword with only a clue about \"shapes that make 2\" to guide them. Sound 2 good 2 be true? Read the book, and you'll find it works!\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eChildhood Education\u003c\/strong\u003e\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003eIn the fourth book of this series, Radius, son of Sir Cumference and Lady Di of Ameter, tackles a mathematical puzzle that wins his friend, Vertex, the honor of becoming the king's heir. Whimsical illustrations bursting with rich colors entice readers to join the boys as they creatively use models, math, and a little manual labor to find Edgecalibur, the king's sword. Neuschwander, an elementary school teacher, chooses Euler's Law as a starting point for the joureny and cleverly wraps it up with a nod to the future King Vertex, the Line-Hearted.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c!-- - - - - - - - - - - ENTER DOWNLOADABLES BELOW - - - - - - - - - - --\u003e\n\u003ch5\u003eDownloadables\u003c\/h5\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg style=\"display: block; float: none; margin-left: auto; margin-right: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-cone-cover.jpg?v=1629123066\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"btn-wrapper\"\u003e\u003ca class=\"product-btn\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-sword-cone-cover-hires.jpg.zip?v=1629123066\"\u003eDownload the Cover\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"btn-wrapper\"\u003e\u003ca class=\"product-btn\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0750\/0101\/files\/sir-cumference-and-the-sword-in-the-cone-activities.pdf?17346766377963099232\"\u003eDownload the Activities\u003c\/a\u003e\u003c\/div\u003e\n\u003c!-- - - - - - - - - - - - ENTER DETAILS BELOW - - - - - - - - - - - --\u003e\n\u003ch5\u003eDetails\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003ePaperback\u003c\/b\u003e\u003cbr\u003eISBN: 978-1-57091-601-4\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e E-book\u003c\/b\u003e\u003cbr\u003eISBN: 978-1-60734-560-2 EPUB\u003cbr\u003eISBN: 978-1-60734-148-2 PDF\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAges: 8-12\u003cbr\u003ePage count: 32\u003cbr\u003e8 \u003csup\u003e1\u003c\/sup\u003e\/\u003csub\u003e2\u003c\/sub\u003e x 9 \u003csup\u003e1\u003c\/sup\u003e\/\u003csub\u003e2\u003c\/sub\u003e\u003c\/p\u003e\n[\/TABS]"}

Sir Cumference and the Sword in the Cone

By: Cindy Neuschwander / Illustrated by: Wayne Geehan

Five knights compete for the honor of heir.

King Arthur has hidden his sword, Edgecalibur and issued a challenge to the knights. The first knight to find the sword will be the next king. Can Sir Cumference and Lady Di point Radius's best friend, Vertex in the right direction? Will Vertex's sharp thinking give him the edge?

Join Sir Cumference, Lady Di of Ameter, and their son, Radius, as they race to help Vertex find the sword and discover the secrets of cubes, pyramids, cylinders, and cones.

Maximum quantity available reached.

Cindy Neuschwander, author

Cindy Neuschwander is a native Californian, but she has lived in many places, including Germany, England, Austria, and Hawaii. As a mathematics education specialist, Cindy sought ways to make math fun, interesting, and comprehensible to her students. In 1992, while living in England, Cindy began working on her first book with this goal in mind.Sir Cumference and the First Round Table took five years to reach publication, but it remains a very popular book for its presentation of math concepts as well as for its amusing and exciting story. It has been followed by further adventures of Sir Cumference and his family. In her spare time, when she isn't writing or dreaming up new math adventures, Cindy enjoys activities with her family.

Read more about Cindy.


Wayne Geehan, illustrator

Wayne Geehan, a graduate of the Art Institute of Boston, has been illustrating books, board games, and jigsaw puzzles for over 20 years. When he isn't painting in his Massachusetts studio, he enjoys being with his family, reading, and researching his family's genealogy.

Read more about Wayne.

  • ABC Best Books for Children

School Library Journal

Neuschwander retells "The Sword in the Stone" from a mathematical angle. Readers follow along with Sir Cumference and Lady Di of Ameter as their son Radius and his friend Vertex set out to find Edgecalibur. Filled with riddles and puns, the story is sure to delight students with some geometry background. Geehan's bright oil, acrylic, and pen-and-ink paintings include all the visual details that the text needs to help solve this geometrical mystery. If your students have enjoyed the first three books in the series, they will certainly want this one. Make sure to share these gems with your math teachers. The books can be used to support educational initiatives such as multiple intelligences, and students who are strong in verbal/linguistic areas will appreciate the integration of literature into their math lessons.

Dallas Morning News

Sir Cumference equals circumference, get it? This adventure series about a knight in the time of King Arthur centers on mysteries that can be solved only by using math. The latest book, The Sword in the Cone, is a play on the Arthurian legend, in which a boy named Arthur pulled a sword out of a stone to become king. That sword was called Excalibur; in this book, the sword is Edgecalibur. But the prize is the same: The person who finds the sword will be king. Sir Cumference's son, Radius, and trusty pal Vertex set off to seek the sword with only a clue about "shapes that make 2" to guide them. Sound 2 good 2 be true? Read the book, and you'll find it works!

Childhood Education

In the fourth book of this series, Radius, son of Sir Cumference and Lady Di of Ameter, tackles a mathematical puzzle that wins his friend, Vertex, the honor of becoming the king's heir. Whimsical illustrations bursting with rich colors entice readers to join the boys as they creatively use models, math, and a little manual labor to find Edgecalibur, the king's sword. Neuschwander, an elementary school teacher, chooses Euler's Law as a starting point for the joureny and cleverly wraps it up with a nod to the future King Vertex, the Line-Hearted.

Paperback
ISBN: 978-1-57091-601-4

E-book
ISBN: 978-1-60734-560-2 EPUB
ISBN: 978-1-60734-148-2 PDF

Ages: 8-12
Page count: 32
8 1/2 x 9 1/2