Sunday, April 14, 2013

Math Mentor Text-The Greedy Triangle

I'm linking up with Collaboration Cuties for their weekly mentor text linky!


I don't know about you, but I love books. I've always loved to read, and I love sharing new books with my students. Nothing excites me more than reading a book to my kids that they have never heard before. This week's topic is math mentor texts. I have a lot of math books I love to share with my kiddos but one of their favorites is The Greedy Triangle by Marilyn Burns. I use this book when I am starting my geometry unit.

This book is about a triangle who enjoys being a triangle and all the jobs he has to do, holding up houses, being a tent, a half of a sandwich, and his favorite job-which is: to slip into place when people put their hands on their hips so he can hear all the news and tell his friends." As the story continues the triangle gets bored and asks the shape shifter for one more side and one more angle. The book describes what the (triangle) now quadrilateral does for his jobs. But the triangle quadrilateral gets bored and asks for another side and angle. The book continues on and on with the triangle asking the shape shifter for another side and angle. It goes though the shapes and shares how those shapes are used in the real world until, finally, the shape realizes he misses being a triangle and returns to the shape shifter to be put back to his correct form. The book ends just like it starts (so you can refer to it when you are teaching your kiddos about circular endings in writing!)

I love using this book to review the names of shapes with my kids in a fun way. I love that it talks about how the shapes are used in the real world. It also teaches a great lesson about appreciating you for who you are.  Don't we all still need to learn that lesson?

What are your favorite math mentor texts? Be sure to link up with Collaboration Cuties to share your favorites and find some new mentor texts to use in math!


  1. I love this book - I use it every year. My students love it too. This year we looked up names of shapes past a decagon - which is usually how far we go - this year we learned some really big words!

    Looking From Third to Fourth

  2. This book is GREAT! She is a great author!
    Tamra and Sarah
    First Grade Buddies

  3. This book is perfect to get students excited about geometry! So fun!

    iTeach 1:1

  4. I love this text as well! Lots of great teaching ideas in the back as well. Thanks for sharing! Just found your site and have become a follower...

    Sarah @ Hoots N' Hollers

  5. I love this book, too! I plan to use it to review for state testing in two weeks! Thanks for visiting my blog and I'm your newest follower!

    Carol @ Teachers Are Terrific!

  6. I love, love, love this book! The kids do too!! Marilyn Burns is the best when it come so integrating math and literacy!!

    Thank you for linking up!
    Collaboration Cuties

  7. I love the Greedy Triangle! My team used to dress up as the various shapes for our Storybook parade.

    I am also your newest follower. Thanks for stopping by my blog and commenting on my mentor text, too.


  8. This is one of my favorite books for teaching shapes...PLUS it is great to put out as a center to reinforce our learning later in the year! Thanks for sharing!

  9. I love this book too! My students always love hearing books during math time and I can't wait to share this story with them during our geometry unit this year. Thanks for stopping by our blog and I'm happy to be your newest follower!

    Table Talk with C & C