The Missing Cache

The Math Kids

#

11 David Cole

&

Shannon O'Toole

A missing boy, espionage, and simple machines are the perfect mix for the Math Kids…

In addition to being president of the math club, Catherine Duchesne is the second member of her school’s geocaching club. When she finds an email address in a hidden cache’s logbook in the woods, Catherine—and the rest of the Math Kids—are catapulted into a missing persons case.

The missing boy is the governor’s son, and the kids believe that if he was a geocacher, the woods might be the best place to look for signs of him. So Catherine, Stephanie, Justin, and Jordan set out on a high-stakes treasure hunt to retrace the missing boy’s path.

But when they come across a No Trespassing sign and an angry man in army gear, they soon find there could be more to this case than they expected. And the missing boy might not be the only one at risk!

Paperback

September 1, 2025

168 Pages | 6 × 9

Middle Grade (10-12)

ISBN 9781998484089

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About the Author:

David Cole has been interested in math since he was a very young boy. He pursued degrees in math and computer science and has shared this love of math at many levels, including teaching at the college level, coaching elementary math teams, and running a summer math camp. He also has a love of writing and has written a number of plays that have been performed. The Math Kids was born of a desire to combine his interests and exercise both sides of his brain at the same time. Find him on his website or on Facebook, Twitter, and LinkedIn.

About the Illustrator:

Shannon O'Toole is a Toronto based illustrator, painter and elementary school teacher. Her playful illustration work is inspired by the unique and humorous characters in her life. Aside from illustrating books for children, Shannon has exhibited her artwork in galleries across Ontario. When she is not drawing, Shannon can be found curled up with her dog, Edgar watching old movies. You can visit her online at www.shannonotooleart.com or follow her on Instagram @shannonotooleart