1 + 1 = 5
1+1=5: and Other Unlikely Additions
illustrated by Brenda Sexton
Sterling Children's Books, 2010
ages 5 to 12, ISBN 978-1-4027-5995-6

So you think 1 + 1 = 2? After reading this book, you won't be so sure.

With a mix of math and creative thinking, 1 + 1 can equal 3, 13, or even 110. It all depends on what you're adding!

Students in kindergarten through fifth grade have come up with their own creative 1 + 1 equations. What do YOU think 1 + 1 equals?
Teachers and librarians: Don't forget to check out the teaching guide and extension activities available here for 1 + 1 = 5.
Awards and Honors
Book Links Lasting Connection
Grand Canyon Reader
Award, 2013
Minnesota Book Award finalist, 2011
Texas 2x2 Reading List 2011
Book Reviews
“For those who think math problems only have one right answer, this playful book offers a surprising number of solutions to 1+1. In one scene, a man and a cat push a wheelbarrow containing a pumpkin and watermelon. “1+1=hundreds?” asks a banner. The reasoning appears on the following page: “1 pumpkin + 1 watermelon = hundreds of seeds!” In another, the sun and moon grin at one another (“1+1=1?”). The explanation: “1 a.m. + 1 p.m. = 1 day!” An energetic and inventive spin on addition. Ages 5–up.”
“A great way to encourage outside-the-box thinking.”
“... the engaging situations will make kids count and think.”
“LaRochelle's text is thought-provoking, while Sexton's illustrations kick up the comedy a few notches.”
“Bright, geometric illustrations nicely bordered and framed make every page fun to turn, and add a sense of order to the boundless imagination that this book will inspire.... Easily one of the most inventive books of the year.”
Equations
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Equations
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