Curated OER
Coded Message Game
In this coded message worksheet, students use the two-digit numbers and letters of the alphabet code to decipher a quote about the brain from Santiago Ramon y Cajal. Students decode eighteen words.
Curated OER
Create Your Own Coded Language
Students discover and identify cryptology used in everyday life. They decipher or crack codes. Students create their own secret writing or coded messages, and develop a dictionary of eponyms. They discuss how they have already...
Curated OER
Patterns of Communication
Scholars examine codes, symbols, and other forms of communication. They discuss Morse Code. Next, they are given messages written in code, which they must decipher.
Curated OER
Cryptography and Cryptanalysis
In this cryptography and cryptanalysis worksheet, 8th graders read the explanation and example for codes and ciphers, then answer 2 questions and decipher 2 messages.
Curated OER
Morning Message-Mystery Code
Students copy and figure out the Mystery Codeword each day. They copy Mystery Code into journal. They match the number with the letter to decipher the code word. They draw a picture to match code word. At the end of the week, the...
Curated OER
Coin Codes
Students work on cracking coin codes in honor of the Navajo Code Talkers Medal. Students review the handout on Crack the Code. Students race to see who can crack the code the fastest.
Curated OER
Squigly's Secret Easter Code
In this math worksheet, students practice solving the code in order to decipher a secret message that is based upon the theme of Easter.
Curated OER
Codebreaker Math
Students solve addition and subtraction problems and decipher and write messages using a code. They read and discuss an informational fact sheet about the Navajo code talkers from World War II, and decode and re-code messages using math...
Curated OER
Decoding a Mystery Message from Space
Students examine a message sent from outer space and do their best to interpret its meaning. In this problem solving lesson, students investigate a code sent to them from "outer space." The students collaborate with their classmates to...
Shodor Education Foundation
Spy Game
Turn students into detectives as they decipher encrypted messages. Introduce your class to modular arithmetic and have a little fun encrypting and decoding secret messages. The activity does not hit many content standards, but would be...
Curated OER
Detective Digis and the Computer Caper
Mathematicians participate in an hands-on activity to investigate the binary number system and write messages in binary code and have classmates decipher the messages. A said video on the topic does not seem to be available, but the...
Curated OER
Coordinating Coordinates
Third graders explore coordinate pairs and coordinate grids. They use a grid on which each letter of the alphabet is assigned a coordinate pair, 3rd graders decipher a coded message. Pupils compare coordinate pairs on a coordinate grid...
Curated OER
Signal Corps
Students examine the role of signal corps during the Civil War and explore the technique of 'wigwag.' In this Civil War lesson, students discuss the way they communicate long distance today, they research how a civil war soldier...
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.
Curated OER
Shh... It's a Secret!
Fifth graders examine a series of rules for deciphering a code. They create their own secret message using a code after watching video. They access a web site to practice their decoding skills.
Curated OER
Keyboarding - Encoding the Keys
Students write an encoded message. They write a short message and encode it by describing each letter's location on the keyboard. They decipher each other's messages.
Curated OER
Algebra: Introduction to Algebraic Expressions
Seventh graders, in an introductory algebra class, code and decode messages using substitution ciphers. Role-playing as mathematicians, they work in groups to decipher several messages, one of which translates to "math is awesome."
Curated OER
U Boat Hunt
Students recognize patterns and sequences in numbers. In this geometry lesson, students create rules to define the sequences and patterns they obsere. They translate coded messages as they dicuss navigational terms.
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
Simplifying Fractions
In this math worksheet, learners simplify the fractions into simplest form. They use the answers to decipher the coded message at the bottom of the page.
Curated OER
Basketball Addition Puzzle
In this math learning exercise, students solve 25 basic addition facts below 20. Using the sums and the key to the code, students decipher a secret message about basketball.
Curated OER
Baseball Word Puzzle and Addition Facts
In this math instructional activity, learners solve 25 basic addition facts below 20. Using the sums and the key to the code, students decipher a secret message about baseball.
Curated OER
George Washington Addition Puzzle
In this math worksheet, students solve 45 basic addition facts. Using the sums and the key to the code, students will decipher the secret message about George Washington.
Curated OER
Addition Facts (Chinese New Year Puzzle)
In this math worksheet, students solve 15 basic addition facts with sums up to 20. Using the answers and the code key, students decipher the secret message about Chinese New Year.