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.