NOAA
Who’s Blue Peter?
Scholars discover who Blue Peter is and how sailors used nautical signal flags on the open waters in order to create their own set of nautical signal flags and send messages to peers.
Institute of Electrical and Electronics Engineers
Binary Basics
Back to the (binary) basics. The resource provides a simple overview of binary code and gives two different activities to introduce it to elementary and middle school learners. Classmates write and decode messages to each other in binary...
Code.org
Keys and Passwords
Scholars explore the relationship between cipher keys and passwords and as they learn more about the Vigenere cipher and continue to read from the book Blown to Bits in the seventh lesson plan of the series. They conduct an activity...
Code.org
Asymmetric Keys – Cups and Beans
Beans are for more than just counting! Introduce public key cryptography with cups and beans and ask scholars to use the beans to send secret numbers. Participants learn how this activity relates to public key cryptography and asymmetric...
Code.org
Cracking the Code
Scholars learn how to crack secret codes as they continue reading from the Blown to Bits and try to crack the random substitution cipher. They also begin learning about the Vigenere cipher.
EngageNY
Using Matrix Operations for Encryption
Data encryption is an important security measure for sensitive data stored on computers. Pupils learn how to utilize matrices for creating code. They also get a great review of matrix multiplication, inverse matrices, and the identity...
Curated OER
Weather Words Decoder (Easy)
Kids love a mystery! There are 11 sets of numbers, and each number translates to a certain letter. To find the word, learners have to record which letters are associated with which numbers. The theme is weather related vocabulary and...
Curated OER
Decoding the Spelling Words
For this spelling worksheet, students use the key to decode 20 spelling words. Students decipher the words and write them on the lines.
Curated OER
Code Fun
In this picture code activity, students use the code key to decipher a message. The symbols are ovals, circles and squares with intricate designs.
Curated OER
Spring Picture Cryptogram Puzzle
In this early childhood cryptogram worksheet, students decode and solve a spring secret message by filling in the blanks with the letter that matches each picture from the box at the bottom of the page.
Curated OER
Morgan's Message
For this unscramble the message worksheet, students unscramble a set of letters and reorder them in the spaces provided to see Morgan's special message to Jack and Annie.
Curated OER
John Glenn Secret Message
In this John Glenn worksheet, students reveal a secret message by decoding the symbols to spell out the secret message. Students utilize the alphabet key to decode the message.