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Triangles Hardcover – February 1, 2014
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From School Library Journal
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
Adler and Miller, whose previous books include Working with Fractions (2007) and Perimeter, Area, and Volume: A Monster Book of Dimensions (2012), offer a well-organized and brightly illustrated introduction to triangles. The clearly written text moves quickly, stopping occasionally to ask questions. Mathematical terms, such as angle, vertex, equilateral, isosceles, scalene, similar, and congruent, are explained along the way. Miller’s digital illustrations feature rounded people and robots working with brightly colored, geometric shapes. Since some early geometry books fudge on the illustrations (roundish shapes for circles, four-sided ones with uneven lines for rectangles), it’s a pleasure to find one in which the straight lines are actually straight and the geometric figures are exact and helpfully labeled. While most children will need time and practice to absorb all the ideas introduced here, the orderly presentation of concepts and the precise yet lively illustrations make this book a fine resource for kids learning about triangles and those reviewing what they’ve learned. Grades K-3. --Carolyn Phelan
Top customer reviews
• how angles are named.
• telling time using angles.
• measuring angles.
• naming triangles (based on angles and length of sides).
• similar and congruent shapes.
Students would benefit from hearing this book multiple times. The first reading would be to familiarize them with the vocabulary; and then multiple readings to answer the many questions and trying the mini experiments. I can’t wait to read this to my second graders to introduce triangles and angles and to share it with our Talented and Gifted teacher for her to expand on. 5 stars!!