Students explore a woman war hero, Hannah Senesh, who used secret codes and messages to protect important information. They follow instructions to write their own secret messages.

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...

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.

Use paint to teach about cryptography. Scholars explore public key cryptography by attempting to mix a secret color using paint. After the activity, they investigate the Diffie-Hellman method using prime numbers, exponents, and modular...

Students practice writing and decoding secret messages before discussing DNA and its role as a code for making proteins. They translate DNA into RNA and identify the sequence of amino acids to find a secret message. An interactive...

High schoolers solve matrices by multiplication. In this algebra lesson, students create coded messages and relate it to solving matrices. They multiply and find the inverse of matrices.

Knowledge of statistics and probability can increase your advantage when playing games. The activity asks learners to analyze the game of MasterMind to determine the number of possible codes. They also examine different variations of the...

Investigate how public key cryptography works. Scholars continue their study of one-way functions and asymmetric keys and apply this information to public key cryptography. They use an app to explore public key cryptography and its...

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

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

Learners are introduced to the concept of variables and their uses. In groups, they are given a code in which they must find the value of the missing words. To end the lesson, they find the value of words over ten letters long and their...

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

Students investigate how effective SNEAK strategies are in detecting hackers. For this technology lesson, students explain the ethical issues about hacking. They graph and analyze their experimental results.

Why did Vietnam POWs and their families receive more media attention than POWs in previous wars?  To answer this question, class members view artifacts, read articles, and engage in class discussion. Individuals then assume the...

Energize an environmental science unit on natural resources with this collection of instructional materials. From simple coloring sheets for primary grade children, to guiding questions for a high school research...

Students will analyze and evaluate political propaganda. For this lesson on the Federalist movement, students will examine the Federalist papers and analyze the Anti-Federalist argument mage against constitutional ratification. This...

Students identify symmetrical and congruent elements in folk art. In this art and geometry lesson, students examine pictures of Masonic Plaque in the Form of a Royal Arch Tracing Board for evidence of congruent and symmetrical elements....

Learners examine the role of science and technology in World War II. They discover how some inventions have changed to meet society's need after the war was over. They visit the museum to complete the lesson.