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The Greedy Triangle

4.11  ·  Rating Details ·  2,749 Ratings  ·  351 Reviews
Kids will get their early math skills in shape with this bestselling picture book--now available in Scholastic Bookshelf!

Bored and dissatisfied with his life, a triangle visits a local shapeshifter to add another angle to his shape. Poof! He becomes a quadrilateral. But then he gets greedy and keeps adding angles until he's completely transformed. Kids will enjoy this bold
Paperback, 32 pages
Published February 1st 2008 by Scholastic Paperbacks (first published January 1st 1994)
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Mar 19, 2013 Kitty rated it it was amazing  ·  review of another edition
Shelves: picture-books
Greedy Triangle is written by Marilyn Burns and illustrated by Gordon Silveria and is part of the Sholastic book range.

The triangle is bored with his shape and asks a shapeshifter to add another angle to his shape....over and over again. He becomes many different shapes until at last he he misses his friends and learns that it's not so bad being a triangle!

This book is great for early learners of maths - Early Years, even KS1, introducing the correct names for geometric shapes.
It challenges chi
Kristen Dutkiewicz
Mar 28, 2017 Kristen Dutkiewicz rated it really liked it  ·  review of another edition
Shelves: childrens
Delivering the message that it is always best to be yourself, The Greedy Triangle also introduces children to various polygons on its journey to discover other shape possibilities.

Gladly, in the end, he realizes staying a triangle is just right!
Sara Lynn
Sep 24, 2011 Sara Lynn rated it it was amazing  ·  review of another edition
1. Genre: Picture Book/Concept (Shapes)

2. Summary: The little triangle loved to interact with others and to always know the town gossip, until one day he decided that he no longer wanted to be a triangle. After several trips to the shapeshifter, and after taking the form of many different shapes, the little triangle learned that he loved who he was after all.

3. Critique:
a. One of the greatest strengths of this story is the use of descriptive illustrations to support the text.

b. The title charact
Jan 13, 2017 Lance rated it liked it  ·  review of another edition
Recommends it for: Babies and toddlers
Recommended to Lance by: Baby Adam
"But his favourite was to slide into place when people put their hands on their hips. That way he got to hear all the gossip before anyone else and got to tell his friends."

This was a fun and creative little book introducing young children to the regular polygons. The role of the triangle and the subsequent shapes which it became make the abstract concepts of geometric shapes more relevant to young children. I also really enjoyed the subversion of the "shapeshifter" and his colourful scientific
Dec 27, 2011 Amy rated it liked it  ·  review of another edition
Shelves: childrens, reviewed
My niece, who is eight, enjoyed this book. It's a fun introduction to geometry cleverly and skillfully disguised as a story about a triangle who is dissatisfied with his same-o same-o life. My niece was absorbed in the book, and she spent time counting the sides and angles on the shape as it changed from a traingle, to a quadrilateral, to a pentagon, etc., etc. She also got a nice little lesson about liking yourself the way you are.

The only downside was that the story got a bit repetitive, whic
Ngoc  Dang
This book introduce kids to different shapes. The triangle wanted to be other shapes because he wanted to have more fun. Since the triangle change into other shapes, the book also introduce sides of the shapes.
This book is interesting. The triangle wants to be better and have MORE sides. A lot of people are like that. This book kind of tells us that more and more things for ourselves, won't really make us happy.
Stefanie Burns
Fun Math oriented book where one day a triangle becomes unhappy with his shape. He's bored. He sees a shapeshifter who turns him into a quadrilateral. After awhile, he becomes bored with this new shape and wants another change.Unsurprisngly, at the end, he likes being a triangle best. Message to this story: the grass is not always greener.

Throughout the story, real world items in the various shapes are pointed out and students will like finding the shapes in the illustrations. I like that Math
Cute story about a bored triangle who would like to add extra sides and angles. As the triangle changes shape it discovers there are many things that each new figure can do. Great way to introduce geometry and shapes to students. Appropriate for grades two to four.
Dec 13, 2016 Lora rated it it was amazing  ·  review of another edition
My kids enjoyed this book so much. It was fun and it counted as math and reading!
Miss Sarah
A triangle wants to know how others shapes feel and keeps visiting a shape shifter to add sides and angles and experience life as other shapes. One on one or upper levels for length and concepts.
Gabrielle Neufeld
I gave this book a 4 because I think it is very fun and teaches a great lesson while also teaching shapes! It shows students that they should be grateful for who they are because who they are is great.

Lexile: 580L
Grade Equivalent: 4.7

6 Traits:
Courtney Lau
Mar 09, 2017 Courtney Lau rated it really liked it  ·  review of another edition
Shelves: fantasy
This is a story about a triangle that wants more and more angles but they tend to get him in trouble.eventually he wants to be a triangle again. This is a good book to use when teacher to love your self just the way you are.
Paige Spychalski
Who would've ever thought a triangle could be so greedy?! In this book, a triangle wants to add an angle to his shape and thats were it starts for him to turn into a whole bunch of different shapes! He keeps changing and changing because he gets so greedy about getting more and more angles added to himself. While he is going around getting these angles, we see him shown in many different everyday life shapes such as tacos, televisions, and even roofs to houses.

This book was very well illustrate
Dec 11, 2011 Caroline rated it really liked it  ·  review of another edition
The Greedy Triangle
By Marilyn Burns
Illustrated by Gordon Silveria
A Marilyn Burns Brainy Day Book
Where’s the Math: This book is about identifying the attributes of shapes in an softly illustrated story format. It talks about important attributes of shapes, especially focusing on triangles, pentagons, quadrilaterals, and more. The story begins with a triangle who felt dissatisfied with his life and wanted to be a different shape. Before his shape changes, the story talks about the different ways h
Melanie Soble
Nov 05, 2011 Melanie Soble rated it it was amazing
1. This book would fall under the category of a picture book, concept.
2. A triangle becomes unhappy with his lot in life and goes to the shapeshifter to become someone new. As the shapeshifter gives him a new side, the character can have new and different adventures. He soon grows dissatisfied and returns to the shapeshifter to change again. Soon the character realizes that even though the new shapes are exciting, he misses his friends.
3. critique
a. This book reads like a story and hides the
Xiaoxiao Zhu
What a cute book about triangle! The Greedy Triangle is a portrait style book with a very fun, welcoming cover. The font on the title varies from word to word and the colors are bright and warm. Gordon Silveria did a fantastic job to of making a plain and simple triangle something more interesting. The pictures are bordered and by bright colors and the font throughout the book is simple and black, but is surrounded by colorful, crazy shape pictures. The font varies in location from page to page ...more
Melissa Long
This book is set up in a vertical format and the illustrations appear to have been created using water color. The illustrations on each page alternate between a double page spread and illustrations on each individual page. Each page also contains boarders around the illustrations, which gives the reader the perspective that they are watching the greedy triangle through a window or as a story is being told to them. This allows for the reader to have a certain amount of distance between themselves ...more
Madeline Bergstrom
This review has been hidden because it contains spoilers. To view it, click here.
A one point in time, the Triangle loved his shape. He loved his jobs, and he loved his friends. Yet one day, he became “dissatisfied” and thought having just “one more side, and one more angle, that maybe his life would be more interesting”. So the Triangle goes to the Shape Shifter and tells him the request. The Shape Shifter changes Triangle into a Quadrilateral! Triangle loves life for a short time as a Quadrilateral then becomes “dissatisfied” once again. He asks the Shape Shifter multiple t ...more
Mar 23, 2013 Dolly rated it liked it  ·  review of another edition
Recommends it for: parents reading with their children
This is an entertaining book about an unhappy triangle who decides he needs more sides and angles. The story is reminiscent of the classic Grimm tale The Fisherman and His Wife, but with a decidedly modern math-based theme. The story has a 'love yourself for who you are' moral, but is also useful to teach geometric concepts.

Overall, the story is entertaining and comical, although the event that triggers the ending is a bit weak, in my opinion. The illustrations are colorful and our girls enjoyed
Lisa P.
Feb 10, 2014 Lisa P. rated it it was amazing  ·  review of another edition
The Greedy Triangle by Marilyn Burns it a really cute book. It teaches students where all different types of shapes are in the world and their purpose. The repeating pattern of the book and story line is easy for children to follow. With each shape students can predict what shapes the next one’s purpose is and what shape will come next. This would be great to read for a math lesson and activities can be done with starting the story with different shapes. I enjoyed the fact the story had a good s ...more
Madison Bopp
I would read this story to the class to discuss geometry. I would supply students with geoboards and rubber bands. I would tell the students to build triangles on their boards with the rubber bands. After building their triangles, I would have students record their triangles onto geoboard dot paper that I will provide for them. We would then come back together as a class and I would have them share their drawings of the triangles they have made. I will then ask the students some questions such a ...more
Feb 17, 2011 Misty rated it liked it  ·  review of another edition
Shelves: math
This is a great supplement for teaching about shapes. More specifically about polygons. This book not only explains what the shapes are, but it also puts the shapes into real world contexts. Also, it makes learning about the polygons more fun because they are included in a fictional story. It starts with a triangle who gets bored with all of the things it can do so it goes to the shapeshifter to get another side and angle which turns him into a quadriliateral. From there he turns into a pentagon ...more
Sydney Klimas
The book Greedy Triangle would be a good read for first or second graders. This is a good information book on Mathematics. This book is about how this triangle doesn't like how he looks, so he goes to a shapeshifter so he can get another angel added to himself and he then becomes a quadrilateral. This keeps going until it gets too crazy. This book is very colorful and will keep kids on the edge of their seats because the triangle keeps changing and it makes the reader want to know what will come ...more
Lucero Hernandez
A little triangle ambitions to become different shapes to experience what it is like to be able to be many things. To do so, it goes to the local shapeshifter so that it can have another side and angle thus become a different shape each time. Upon adding too many sides and too many angles it is no longer able to keep its balance, and becomes friendless and unhappy. Ultimately it goes back to the shapeshifter to become a triangle again. This book is great for a geometry lesson on shapes and polyg ...more
Mary Conroy
Jun 06, 2011 Mary Conroy rated it it was amazing  ·  review of another edition
Shelves: math-books
I love this book! It is great for not only teaching the names of different geometric shapes, it also shows creative places where we see this shapes in our daily lives. For instance, it talks about how when people put their hands on their hips, the space between their arm and side makes a triangle. It would be very easy to incorporate physical activity and movement into the lesson. This book could be made into an entire math lesson, as well as beyond, as it introduces students how to thing about ...more
Beverly Kennett
The triangle gets bored with his life and visits a shape shifter to gain another side and angle, which he feels will make his life more interessting. The magic works for a while, until he decides that a fifth side would be even better. So, the shape makes another trip to the shapeshifter. the story continues on and on until he realizes that he misses his friends from his triangle days. Eventually, the shape reverts back to his original state andd life and is very content in the end.

Good for its
Asheley Frazier
The storyline provided in this story was very engaging. It describes a triangle who is unhappy with it's shape, because he's bored with doing the same things over and over. He then goes to the local shape shifter to change shapes. He goes about his day doing all the things that the different shapes would normally do until he realizes that he
Misses being himself and is turned back into a triangle. This book is an awesome way to discuss geometry with K-2 students and relate it to real life situat
Dec 05, 2012 Leslie rated it really liked it  ·  review of another edition
Awesome book! I love love love the illustrations in the book! They are so beautiful and have so much color! The book is a really beautiful picture book that I would honestly recommend for middle school children, which is great! The story line which is so funny and cute, can be read to middle school children. I don't think there are many picture books that middle school children can actually enjoy. I also love that the way the book is written and the pictures distract from the fact that the book ...more
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Marilyn Burns is one of today’s most highly respected mathematics educators. Over the course of 40 years, Marilyn has taught children, led inservice sessions, and written a variety of professional development publications for teachers and administrators.
More about Marilyn Burns...

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