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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...
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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...
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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...
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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.
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Lesson Plan
Curated OER

Breaking the Code

For Teachers 6th - 12th
Learners understand what cryptography is and how to design original number-based codes. In this cryptography lesson, students research codes during World War II. Learners develop number-based codes.
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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. 
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Lesson Plan
Curated OER

Coin Codes

For Teachers 3rd - 7th
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.
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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...
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Worksheet
Curated OER

Fraction Subtraction Code Breaker

For Students 5th
For this fraction subtraction code breaker worksheet, 5th graders solve 11 fraction subtraction problems with common denominators, then use the answers to break the code.
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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...
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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 plan, 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...
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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...
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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.
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Lesson Plan
Curated OER

Codebreaker Math

For Teachers 2nd - 3rd
Learners 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...
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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...
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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...
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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.
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Worksheet
Curated OER

Codebreakers

For Students 6th - 7th
In these code breaking activity worksheets, students complete 9 pages of activities for math puzzles and code breaking activities.
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Lesson Plan
Curated OER

The Importance of Patterns

For Teachers 4th - 7th
Students 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. Students read a word problem and watch a...
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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.
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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...
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Worksheet
Curated OER

Test Your Reading Skills

For Students 4th - 5th
In this reading worksheet, students read equations and solve each with a calculator. Students turn the calculator upside down to match the word they see with a given clue. Ten equations and ten clues are provided.
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Worksheet
Curated OER

0.7734: Calculator Words

For Students 3rd - 5th
In this calculator worksheet, students will solve 10 equations using their calculator. Then students will turn their calculator upside down and match the word with a clue at the bottom of the page.
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Worksheet
Curated OER

Formulae

For Students 9th - 12th
In this secondary mathematics activity, high schoolers participate in five activities such as code breaking, color coding, and one and even games.  The nine page activity contains eight activities.  Solutions are included. 

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