Review by Booklist Review
While most children's books on circles simply identify the shape and give examples of it, Adler and Miller take things a step further by challenging elementary-school students to grapple with some basic geometric concepts. The book relies on readily available supplies (paper, a pencil, a ruler, scissors, a round dish, a can) for a series of activities designed to build a child's understanding gradually, one step at a time. The concise, methodical text explains simple, hands-on ways to determine a circle's diameter, radius, and circumference. Readers will pick up vocabulary such as arc, chord, sector, segment, and tangent along the way. Next, they'll find out how to determine the value of pi and how to use it in finding the circumference and area of a circle. The clarity of the illustrations is achieved partly by leaving out extraneous details, but Miller's brightly colorful digital pictures always project a sense of fun. A companion volume to the writer and illustrator's Triangles (2014), this well-designed book offers an unusually clear introduction to the basic geometry of circles.--Phelan, Carolyn Copyright 2016 Booklist
From Booklist, Copyright (c) American Library Association. Used with permission.
Review by Publisher's Weekly Review
Frequent collaborators Adler and Miller follow their books on fractions, time zones, triangles, and other topics with a thorough look at all things circular. After a brief run-down of two- and three-dimensional shapes with round aspects (cylinders, cones, spirals, etc.), Adler dives into what makes a circle a circle, unloading a significant amount of vocabulary along the way, including words like symmetrical, diameter, sector, and chord, all clearly explained in direct writing, assisted by hands-on project ideas and Miller's playful circle-based animal portraits. By the time children get to the closing line-"We live in a world of circles"-they'll be convinced. Ages 6-10. (Aug.) © Copyright PWxyz, LLC. All rights reserved.
(c) Copyright PWxyz, LLC. All rights reserved
Review by School Library Journal Review
Gr 2-4-In this companion volume to his equally attractive and useful Triangles, Adler addresses the geometric world of circles. Starting with an introduction to the realm of noncircles (spheres, cylinders, cones, etc.), he then launches into circular spaces-complete with centers, points, diameters, radii, chords, and other potentially unfamiliar terminologies. Simple, logical activities are presented to drive concepts home, including popping into the world of pi and challenging young geometers to find the areas of a gaggle of bright circles. Miller's bright illustrations provide an excellent guide for the experimental activities. A glossary is appended, as are solutions to the challenges in the text. Math teachers and homeschooling parents will be delighted with this clear, concise overview of a familiar shape with unexpected details. VERDICT Extremely useful for the classroom at home or in school, and very approachable in its colorful minimalism.-Patricia Manning, formerly at Eastchester Public Library, NY © Copyright 2016. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
(c) Copyright Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
Review by Horn Book Review
After differentiating a circle from its 3-D relatives (spheres, cylinders, cones), Adler provides step-by-step directions for drawing the 2-D shape and its various parts (diameter, radius, sectors, etc.) and for measuring its circumference and area. Clear visuals reinforce activity instructions, geometry terms, and concepts (e.g., pi). Friendly animal illustrations provide opportunities for identifying specific circle parts. Answers to the activities are appended. Glos. (c) Copyright 2017. The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
(c) Copyright The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
