Math books for every age!


(Ages 0-5)

Goodnight Numbers

The perfect bedtime book for you and your wee one! Snuggle up and count to 10, while learning how numbers exist in the world around us!
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(Ages 2-5)

Bathtime Mathtime

Children learn simple addition through the concept of “counting on” in this soapy, splashy bathtime romp! BUY NOW

Bathtime Mathtime: Shapes

Toddlers get a head start on learning their shapes. It’s a tubful of fun! BUY NOW

Ten Magic Butterflies

(Ages 4-6)

Ten Magic Butterflies

In this enchanted story full of butterflies and magic, children learn all the ways to group numbers to make 10 – an essential building block of math!
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Double Puppy Trouble

(Ages 4-9)

Double Puppy Trouble

Learn the power of doubling in this sweet, zany tale of 2 puppies… then 4, then 8, then 16…!
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(Ages 6-9)

Do Not Open This Math Book

Giggle your way through math as Danica (and the reluctant Mr. Mouse) teach children the essentials of addition and subtraction!
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(Ages 8-10)

The Times Machine!

Travel through space & time with a revolutionary way to memorize times tables. Learn multiplication and division, like, yesterday!
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(Ages 9-12, and Adults!)

Math Doesn’t Suck

This book covers fractions, decimals, percents and more – perfect for a struggling middle schooler! BUY NOW


(Ages 11-13, and Adults!)

Kiss My Math

This book makes pre-algebra a breeze – graphing, solving for x, you name it. BUY NOW


(Ages 12-14, and Adults!)

Hot X: Algebra Exposed

Never be confused by algebra again! This book covers Algebra 1, including the quadratic formula, and more!
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(Ages 14-16)

Girls Get Curves: Geometry Takes Shape

This book demystifies geometry concepts – including geometry proofs – making them fun & easy to grasp.

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Math Doesn’t Suck
Kiss My Math
Hot X: Algebra Exposed

These books are often used by adults – whether for a smooth transition upon returning to college, as a refresher to be better prepared when helping kids with homework, or just because they want to conquer an old fear of math!


About  danica

Best known for her roles on The Wonder Years, The West Wing, and lately for her popular movies on Hallmark Channel, Danica McKellar is also a New York Times bestselling author of math books for kids, with over a million copies sold since 2007.  Starting with “Math Doesn’t Suck,” “Kiss My Math,” “Hot X,” and “Girls Get Curves: Geometry Takes Shape,” books aimed at middle school and high school readers, she wrote her first children’s picture book, “Goodnight Numbers” in 2017, followed by “Ten Magic Butterflies,” the “Bathtime Mathtime” series, and “Do Not Open This Math Book,” aimed at 6-8 year olds, introducing us to the sweet character of Mr. Mouse while helping kids parents and teachers everywhere with Common Core addition and subtraction!

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She is also an internationally-recognized mathematician and advocate for math education. A summa cum laude graduate of UCLA with a degree in Mathematics, Danica has been honored in Britain’s esteemed Journal of Physics and the New York Times for her work in mathematics, most notably for her role as co-author of a ground-breaking mathematical physics theorem which bears her name (The Chayes-McKellar-Winn Theorem). She is incredibly proud that “Goodnight Numbers” was selected for inclusion in Dolly Parton’s literacy charity, The Imagination Library, and her voice can be heard narrating its documentary debuting in Spring 2020.

Danica’s tenth McKellar Math book, The Times Machine!, hit the shelves June 30th, 2020.

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Explore  the books

Danica knows how to “speak” math to kids in their own language.

Ira FlatowNPR Science Friday

Danica McKellar is a great teacher! Kids will feel like she’s right by their side.

Steven StrogatzThe New York Times

Danica’s unique, conversational style could reach anyone struggling in math, including students with learning disabilities.

Richard D. Lavoiespecial education author

Danica McKellar: The Thinking Girl’s Role Model.

ABC World News

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