Title: The Greedy Triangle
Author: Marilyn Burns
Illustrator:
Gordon SilveriaAuthor: Marilyn Burns
Recommended Grade Level: PreK-2nd
CCSS.Math.Content.2.G.A.1
Recognize and
draw shapes having specified attributes, such as a given number of angles or a
given number of equal faces.1 Identify triangles, quadrilaterals,
pentagons, hexagons, and cubes.
CCSSM Mathematical Practice:
CCSS.Math.Practice.MP5 Use appropriate tools strategically.
Mathematically proficient students consider the available tools when
solving a mathematical problem. These tools might include pencil and paper,
concrete models, a ruler, a protractor, a calculator, a spreadsheet, a computer
algebra system, a statistical package, or dynamic geometry software.SM Standard
for
Summary: There once was a triangle who grew tired of his shape, angles and sides. He decided he wanted to be made into a new shape so he went to the shapeshifter who kept making him into all kinds of new shapes and sides. What once was a triangle has now become a decagon who could no longer recognize himself because of how greedy he was.
Rating: *****
I give this book five stars because it is a colorful child friendly book, which illustrates everyday items and taps into a child’s experience to explain different types of polygons. It starts with a simple triangle and increases by one angle and side to continue to teach and give examples of each shape.
Classroom
Ideas/Lesson Ideas: I plan to use this book to introduce polygons starting
with triangles. I will introduce the total number of sides and angles it has.
From there I will discuss each new polygon as I increase each shape by a side
and an angle. The students will then be able to learn about triangles,
quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, and decagon.
Jeremy,
ReplyDeleteI like how this book evolves in terms of shapes. It is a great read to show students how one shape can eventually transform into another shape and compare in terms of relationships and differences. I think this is also a great book to have students incorporate art as they mimic the many shapes introduced in the reading. Perhaps a mini activity is having students predict what shape will the triangle transform to next. Allowing students to do this as you read allows you to check for students concept and understanding of shapes!