PPT
Curated OER

The Da Vinci Code: Math Fun

For Teachers 5th - 6th
A wonderful way to introduce or practice simple algebraic equations, where a variable is used in place of a number. Learners will work to crack the Da Vinci Code (as it is called) and replace letter variables with the "code" numbers to...
Worksheet
Houghton Mifflin Harcourt

Challenge: Code Breaker

For Students 2nd - 4th Standards
Here is a code-breaker multiplication and division game which has learners find the missing letter in equations, then solve and use those letters to "break the code," which actually is the answer to a riddle. Make math fun with a...
PPT
Curated OER

Secret Country Code Breaker

For Teachers 4th - 6th
Super cool and totally fun math awaits your class. They are the code breakers, and their job is to identify and locate the secret agent by breaking two different codes. They use all their skills to solve a series of double-digit addition...
Lesson Plan
Curated OER

Breaking the Code

For Teachers 6th - 12th
Students understand what cryptography is and how to design original number-based codes. In this cryptography lesson, students research codes during World War II. Students develop number-based codes.
Assessment
1
1
Balanced Assessment

Genetic Codes

For Students 11th - 12th Standards
Determine the number of possible genetic codes. Class members are challenged to determine the number of possibilities of a genetic code that is 20 bases long. They continue to explore the average lengths of broken RNA molecules.
Handout
Curated OER

Math Handbook: Calculus

For Students 10th - 12th
If only there was a reference that listed all the formulas covered in calculus. Luckily, there is. This comprehensive 197-page handbook provides formulas and explanations for all topics in AP Calculus or in a standard college calculus...
Lesson Plan
Curated OER

Coin Codes

For Teachers 3rd - 7th
Young scholars work on cracking coin codes in honor of the Navajo Code Talkers Medal. Students review the handout on Crack the Code. Young scholars race to see who can crack the code the fastest.
Lesson Plan
EngageNY

Using Matrix Operations for Encryption

For Teachers 11th - 12th Standards
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...
Assessment
Bowland

German or English?

For Teachers 6th - 8th
Sprechen sie Deutsch? Future cryptographers must decide whether an unknown text is written in English or in German. They use provided pie charts about the frequency of words in the English and German languages to help make their decisions.
Worksheet
Curated OER

Fraction Subtraction Code Breaker

For Students 5th
In this fraction subtraction code breaker worksheet, 5th graders solve 11 fraction subtraction problems with common denominators, then use the answers to break the code.
Activity
101 Questions

Safe Cracking

For Students 9th - 12th Standards
How long would it take to break into a safe by testing every possible combination of codes? Pupils view a video clip of this happening and must determine the total amount of time before success. They measure how long each step takes, add...
Unit Plan
Bowland

Alien Invasion

For Teachers 6th - 9th
Win the war of the worlds! Scholars solve a variety of problems related to an alien invasion. They determine where spaceships have landed on a coordinate map, devise a plan to avoid the aliens, observe the aliens, and break a code to...
Lesson Plan
Curated OER

Patterns of Communication

For Teachers 3rd - 5th
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. 
Assessment
1
1
Balanced Assessment

MasterMind

For Students 9th - 12th Standards
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...
Lesson Plan
Curated OER

Codebreaker Math

For Teachers 2nd - 3rd
Young scholars 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...
Lesson Plan
Curated OER

Add It Up In Number Ville! Adding 2-Digit Numbers With and Without Regrouping

For Teachers 2nd - 4th
Students explore adding 2-digit numbers. For this math lesson, students identify 2-digit numbers and use base ten blocks to practice adding. Students use addition to break a code.
Lesson Plan
Curated OER

Math Games

For Teachers 4th
Fourth graders participate in a lesson that is involved in the breaking of codes using computer games. They access the internet to play math games. The teacher uses powerpoint to help guide students with common problems in loading and...
Worksheet
Curated OER

Blood Highways

For Students 5th
Fifth graders read an informative paragraph about how blood travels through our bodies. Then, they fill in the missing letters for words that label things in the circulatory system. An answer key is provided on page two. An interesting,...
Lesson Plan
Curated OER

The Importance of Patterns

For Teachers 4th - 7th
Young scholars study geometric shapes and find patterns in shapes, numbers, and beats. In this patterns lesson, students complete a handout 'Guess the Pattern and watch a video about breaking a code. Young scholars read a word problem...
Lesson Plan
Curated OER

Multiplication: A Treasure Hunt to Two and Three Digit by One Digit Multiplication

For Teachers 4th - 5th
Here is a math instructional activity which has learners practice multiplying two and three digit numbers by one digit numbers. They discuss multiplication strategies and use those strategies to play a game.
Lesson Plan
Curated OER

Sea Ice: Cracking the Egg Code

For Teachers 6th - 9th
Students study the egg code to learn about sea ice. In this sea ice lesson, students discuss and view a diagram to learn about the egg code when describing sea ice and its thickness. Students work in groups to play a game using the egg...
Lesson Plan
Curated OER

Sieve of Eratosthenes

For Teachers 5th - 8th
Students discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.
Worksheet
Curated OER

Election Day Cryptarithm

For Students 9th - 11th
In this algebra worksheet, students rewrite word problems using clues, into algebraic equations. They break the code deciding between political candidates John or Barack. There is an answer key to this problem.
Worksheet
Curated OER

Odd or Even (Sums and Differences)

For Students 1st - 2nd
In this math worksheet, students examine 14 problems inside geometric shapes. Students solve the simple addition or subtraction problems and color the shape blue if the answer is even and red if it is odd.