Do Not Open This Math Book: Addition + Subtraction

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Product Details

$18.99  $17.66
Crown Books for Young Readers
Publish Date
7.6 X 9.4 X 0.4 inches | 1.2 pounds

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About the Author

Danica McKellar is the New York Times bestselling author of groundbreaking math books, including the picture books Goodnight, Numbers and Ten Magic Butterflies and the middle school hit Kiss My Math, and is a summa cum laude graduate of UCLA with a degree in mathematics. She is also well known for her acting roles on The Wonder Years, The West Wing, and multiple Hallmark Channel movies, and as a quarterfinalist on Dancing with the Stars. She lives with her family in Los Angeles. Find her on Facebook, Twitter, and Instagram (and more) at @danicamckellar, and visit

Maranda Maberry is a freelance illustrator who's had a pencil in her hand for as long as she can remember. Her passion led her to pursue an art degree, which was then followed by a colorful illustration career. She lives in the Pacific Northwest with her designer husband and twin daughters. Visit her at


Praise for Do Not Open This Math Book

"The chapters are constructed well to allow concepts to build on one another, and pleasantly simple cartoon interjections offer readers mental breaks and comic relief. The book is intended to assist both students and their caregivers . . ." -School Library Journal

Praise for Danica McKellar's Goodnight, Numbers
New York Times Bestseller!

"A similarly simple, quiet feel as Margaret Wise Brown's iconic Goodnight Moon...there is a lot to count on."

"The joys of counting combine with pretty art and homage to Goodnight Moon." --Kirkus Reviews

"McKellar brings her enthusiasm for mathematics to a younger crowd in this gentle and well-executed counting book." --Publishers Weekly

"A winner for bedtimes or storytimes focusing on counting." --School Library Journal