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 Enlarge One Hundred Hungry AntsAuthor: Elinor J. PinczesIllustrator: Bonnie MacKainPublisher: Houghton MifflinCopyright: 1993ISBN: 0-395-63116-5Number of Pages: 32Ohio Standards Alignment: Grades 3–5With "a hey and a hi dee ho," one hundred hungry ants scurry off to a picnic in search of yummies for their empty tummies.  As the 100 ants move in single file formation, the littlest ant suggests that they could get there much faster if they were in more columns with fewer ants per line.  The ants agree and form 2 lines of 50 and continue their journey.  The littlest ant continues to prod them to go faster by increasing the number of columns.  This story will prompt students to think about the various factor pairs for 100 as the ants move faster and faster toward their lunch.  At last they make it to the picnic site, only to find the food is all gone!  The 99 ants with "growling tummies" go off in pursuit of the littlest ant for using up too much time rearranging them! Go to: How to Use This BookHighlights and InsightsRelated ORC ResourcesOhio Standards

 How to Use This Book As the book is read aloud, the teacher could ask students to predict what the littlest ant will suggest next for a new formation. Do the students note a pattern? What suggestion would the students make and why? Students could make their own ____ Hungry Ants story and create their own factor pairs for a given number and then read their story to a younger student or class. The teacher could ask if there are any number combinations that will not work, and why. What is true of each of the factor pairs? Is there a "best" factor pair to use for the marching columns? Teacher question: If we know factor pairs for 100, how could we use that information to find factor pairs for 1,000; for 10,000; etc? What do you notice? This book had an audio tape that accompanied it when it was published by Scholastic about 15 years ago. I have used it with middle school students to begin our unit on patterns and reinforce the concept of muliplication as repeated addition.
 Highlights and Insights This book is very elementary in terms of number sense but can be adapted to the upper elementary grades for reinforcing multiplication and patterning. This book can serve as an excellent introduction to factor pairs, prime numbers, and perfect squares.