In this math puzzle worksheet, students will reduce a series of fractions to their lowest terms. Then students will use the code provided to decipher the puzzle.

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."

Young scholars explore the lives of spies. In this secret government agencies lesson, students visit the Imperial War Museum and the Essex Secret Bunker online or in person to discover details about Britain's spies and secret bunker.

Students are introduced to the vowel pattern that produces the /oo/ sound in words. Through matching, listening, and spelling activities, students recognize the phoneme /oo/ and it's placement in words. They write a message using words...

Students rewrite word problems using expressions and equations. In this algebra lesson plan, students use the correct variable to solve and write equations. They use the TI to graph their solution.

Students recognize patterns and sequences in numbers. In this geometry lesson plan, students create rules to define the sequences and patterns they obsere. They translate coded messages as they dicuss navigational terms.

In this math worksheet, students plot the coordinates and then unscramble a code in order to decipher a riddle about the expressions used in the Appalachian Mountains.

For this cryptogram worksheet, students fill out the key to a code and decipher a cryptogram about Abraham Lincoln. Students fill in the missing letters and read the message. The pattern in the key is not obvious.

Students perform operations with matrices. In this algebra lesson, students use cryptography and cryptanalysis to solve problems. They add, subtract, and multiply matrices.

In this cryptography/cryptanalysis activity, students work with a group and use logic and cryptography techniques to solve problems.

Learners read about Gray Whales and circle any unfamiliar terms.

The basic difference between a code and cipher is explained briefly. You can try to crack a simple cipher at this location.

Story of Michael Nirenberg and his colleagues deciphering of DNA.

Explore the NOVA's Virtual Enigma machine used during WWII. You can send an encrypted message to a friend along with the special key needed to decipher the message. A link is also included to the Virtual Enigma.

Learning about transcription and translation can be difficult but this animation helps make the processes less confusing. The animation is interactive and it also covers the overall importance of proteins.

Using a primary source and transcript students decipher and create historically-accurate spy communications like those used by George Washington and the Culper Spy ring in the American Revolutionary War.

The companion site to the show by the same title. Interesting site allows the reader to decipher a coded message. Information on Venona Intercepts and interviews with children of famous spies.

Based off of the hit television show NUMB3RS, this lesson is best used to serve as a preliminary introduction to coding and encryption. Messages are ciphered by single-letter substitution, and the lesson guides students into deciphering...

Biographical information about Francis Crick as well as access to an archival collection of his papers, letters, photographs, and notes, including those related to the discovery of the double helix.

Do your logic skills need sharpening? Use the interactive code breaker to at this one page website to do just that! The solution is available to double check your solution.

In a world where people are sharing information every second online, securing that information is paramount. In this lesson students will understand the principle of encryption, how to decode encryption, and how to construct ciphers. The...

Julius Caesar encrypted messages two thousand years ago. By knowing the techniques of deciphering a code--frequency analysis, known text, and brute force--one can begin to understand the three key aspects of data encryption, decryption,...

This video features Harry and his cousin Harley. Harley is desperate to use Harry's bike, but first he must decipher the combination to the bike lock by solving a word problem. In the accompanying classroom activity, students complete a...

The difference between a code and cipher is explained. See if you can solve a simple cipher challenge at the bottom of the page.