Curated OER
Secret Writing Devices
Elementary and middle schoolers explore the world of secret writing, otherwise known as cryptography. After an interesting introduction to the activity, learners utilize a decoder badge which uses the St. Cyr cipher - which is a cipher...
Curated OER
Decoding Nazi Secrets
Learners practice decoding messages given the key. They continue to practice solving messages without a key. They must determine the best way to view the message. They examine secret messages during World War II.
Curated OER
Caesar Ciphers: An Introduction to Cryptography
Students encode and decode messages using a Caesar Cipher. In this encoding and decoding messages using a Caesar Cipher lesson, students discuss cryptography and how it is used. Students make a Caesar wheel to encode and decode...
Curated OER
Magnetism-Decode Encrypted Statements
Third graders solve a cryptogram by decoding a message written with wingdings. In this decoding lesson, 3rd graders solve a message related to magnetism. Students have notes about magnets once they've finished.
Curated OER
All Systems Go!
Secret codes are so much fun, and a great way to practice nearly any math skill. Let your class become code breakers as they investigate inverse matrices. They use TI-Nspire technology to solve systems of equations which help them crack...