Send secret messages!
How can you send a message that only you and people you trust can ever read? Learn how to make an unbreakable code (yes, really) using one-time pads in this free online program! Only proficiency with addition and subtraction required!
Registration required for this free program. Recommended ages 8-12, but other kids interested in cryptography are will find this program fun if they feel comfortable adding and subtracting two digit numbers. We have two sessions, which will cover the same content.