Curated OER
Basic Crypto Systems
Students try to solve codes mathematically. The use of a code needs a key. Students try to decipher a code with a mathematical key. This requires focus and higher order thinking skills like analysis.
Curated OER
Secret Code
Students in an ESL classroom work together to gather information about one another. After eating a treat, they receive a secret message that they must solve on their own. They use the alphabet and each other eventually to solve the mystery.
Curated OER
Code Breakers
Learners collect data and make a frequency table, change ratios into percents, and analyze data to make predictions.
Curated OER
Keyboarding - Decoding the Keys
Students work in pairs to decipher encoded messages. They read off descriptions of each letter's location on the keyboard and type them into a document to form a message.