Scientific Explorer Secret Messages Kit
Features:
Communicate through secret messages and go on "missions" just like real spies
Explains how to create and discover cryptic messages
Step-by-step instructions make it easy for your child and a friend to start and finish these activities
Includes 18 different missions teach you how to use invisible ink, various Ciphers, Polybius Checkerboard, Braille, basic code breaking tools and more
Recommended for children 8-years of age and older