Triangles

by David A. Adler, Edward Miller (Illustrator)

Overview

With bright illustrations and clear, kid-friendly language, this book introduces one of the most basic geometric shapes to young readers. 

Formed of three sides and three angles, triangles are everywhere—especially on the pages of this book, where two kids and their robot friend assemble a brand-new bot from different types and sizes of triangles.  

This title defines important geometry vocabulary in simple, accessible terms, reinforcing the text with illustrations of the different types of and relationships between triangles. Activities on identifying, measuring, and comparing angles help readers understand these important ideas. 

Drawing on his years of experience teaching math, David Adler's text thoroughly introduces fundamental mathematical concepts.  Colorfully illustrated by nonfiction veteran Ed Miller, this book is perfect for readers just beginning to study shapes and geometry.

Product Details

ISBN-13:	9780823431380
Publisher:	Holiday House
Publication date:	01/17/2014
Sold by:	Penguin Random House Publisher Services
Format:	eBook
Pages:	32
File size:	17 MB
Note:	This product may take a few minutes to download.
Age Range:	6 - 9 Years

About the Author

David A. Adler taught math for eight years. In that time he learned many things from his students -- including the fact that they thought fractions were hard. So he decided to prove that learning how to work with fractions is not only easy, but also fun! He lives with his family on Long Island.

Edward Miller loves to make concepts clear to kids and has demonstrated that in his previous nonfiction books. School Library Journal praised his Alphabeep: A Zipping, Zooming ABC by Debora Pearson as "stunningly illustrated." He lives in New York City.

Editorial Reviews

★ 05/01/2014
Gr 2–4—A straightforward and easy introduction to triangles and angles. There is a lot of repeated information, which will work well with students with different learning styles, and the bold, exciting illustrations will hold kids' attention. Adler relies on the tried-and-true example of a clock in order to explain angles, and most students will easily understand—as long as they are still exposed to analog clocks. The search-and-find illustrations throughout are an added kid-friendly bonus. While important words are printed in boldface and defined throughout the book (e.g., acute angle, isosceles triangle, reflex angle), the book's one drawback is the lack of a glossary; students will have to look back through the text to redefine words. A recommended purchase for any math collection, this title serves as a great update on the subject.—Jasmine L. Precopio, Fox Chapel Area School District, Pittsburgh, PA

School Library Journal

★ 2014-01-29
Everything kids need to know about triangles—vocabulary, explanations and all. Beginning with the definition of a triangle and a breakdown of its parts—sides, angles, vertices—Adler quickly launches into a discussion of angles, even teaching kids how they are named, measured and classified. A clever activity instructs readers to cut out a triangle, any triangle. By tearing off the corners and lining them up so the vertices touch, kids can see that the angles of a triangle always sum 180 degrees. Vocabulary is printed in bold type and defined within the text, each new term building on the ones that have come before: "All three angles in ?ABC…are acute angles. ?ABC is an acute triangle." In the primary-colored digital illustrations, a dark-skinned boy and a light-skinned girl are accompanied by a robot as they progress through the book, drawing and studying triangles. They accumulate materials to make another robot and then identify the angles and triangles that make up its body. Labels and diagrams make the learning easy, while the endpapers show several examples of each type of triangle presented. A final activity challenges readers to use their arms and hands to find and name angles—a turn of the page supplies labeled answers. With lots of layers of information, this is a book that can grow with kids; new information will be accessible with each repeat reading. (Math picture book. 6-10)

Kirkus Reviews