Written BY ELLA SCHWARTZ
Illustrated by Lily Williams
PUBLISHED BY BLOOMSBURY PUBLISHING
ISBN: 9781681195148

Codes can carry big secrets! Throughout history, lots of good guys and lots of bad guys have used codes to keep their messages under wraps. This fun and flippable nonfiction features stories of hidden treasures, war-time maneuverings, and contemporary hacking as well as explaining the mechanics behind the codes in accessible and kid friendly forms. Sidebars call out activities that invite the reader to try their own hand at cracking and crafting their own secret messages. This is the launch of an exciting new series that invites readers into a STEM topic through compelling historical anecdotes, scientific backup, and DIY projects

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PRAISE
“Williams adds a diverse group of spot-art figures to go with the array of tables, diagrams, and occasional photos.”
– KIRKUS REVIEWS


Mathical Honor Book by MSRI and NCTE, 2021
AAAS Subaru Prize, 2018
