For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate simple sums.
Curated OER
Secret Country Code Breaker
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...
Curated OER
Secret Code Spotlight
In this secret math code learning exercise, learners solve 14 equations and apply the color value for each line according to the key. Students write the final total and the secret coded letter from another key. Learners read the message.
Doing Maths
Converting Metric Measurements Code-Breaker
Can your scholars crack the code of this metric worksheet? To start, mathematicians must convert different units of measurement to the standard metric system form. Then, pupils plug in the corresponding letter to the correct answer to...
Smithsonian Institution
What's the Code? Coding Robot Movements Using Sound
Tap into the desire to learn about computer codes. Pupils apply the Tap Code and the Polybius Square to send secret codes using sound. They design a code that tells a robot what movements to make and then test out their code using one of...
Curated OER
Secret Code
In this multiplication worksheet, students complete multiplication problems containing numbers 1 through 12 and create a secret code at the end. Students complete 21 problems.
Curated OER
Secret Code
In this division activity, students divide one and two digit numbers and come up with a secret code at the end. Students complete 11 division problems.
Curated OER
Create Your Own Coded Language
Students discover and identify cryptology used in everyday life. They decipher or crack codes. Students create their own secret writing or coded messages, and develop a dictionary of eponyms. They discuss how they have already...
Houghton Mifflin Harcourt
Challenge: Code Breaker
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...
Little 10 Robot
Operation Math Code Squad
Your mission, if you decide to accept it, is math skills practice. In this app, Mission Impossible meets basic number operation skills, and your students are the secret agents.
Curated OER
Patterns of Communication
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.
Curated OER
You Know the Answer: Math Riddle
Although the riddle is an outdated political reference, this math challenge is a good practice in operations and domain-specific vocabulary. Learners complete 18 problems, using multiplication, division, subtraction, and addition. Some...
Curated OER
Flow Chart Secret Code: What Should You Call A Cow That Lives in Alaska?
In this math code worksheet, students solve 10 multi-step problems using all math operations. Students start with the given number and perform each step in a flow chart format. Students take their total answer and decode the secret message.
Curated OER
All Systems Go!
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...
CK-12 Foundation
Addition and Multiplication Properties with Real Numbers: The Secret of Subtraction
An interactive boosts mathematicians' knowledge of subtracting integers using a horizontal number line by way of multiple-choice, true or false, and discussion questions.
Curated OER
Secret Code Message 2
In this letter and number recognition worksheet, students use a secret code box to help them spell 4 short Ee words. Students then draw pictures of the words.
Curated OER
Code Cracking
There is nothing more engaging than cracking a secret code! Middle schoolers will replace letters with numbers to solve problems. This game will help them to begin to understand algebra questions by finding the value of missing numbers....
Curated OER
Multiplying Decimals
In this mathematics instructional activity, students find the answer to each problem by multiplying the decimals properly. Then they decipher the secret code using the letters and punctuation next to each answer.
Curated OER
Boat Safety Math
What should you always carry on a boat? Learners must solve ten addition and subtraction problems to solve this riddle. The equations include single and double-digit numbers, but no negative numbers are used. They also don't need to...
Penguin Books
Educator's Guide: The Da Vinci Code by Dan Brown
Dan Brown's The Da Vinci Code is filled with secrets. Help readers find the clues, solve the riddles and puzzles, and unwrap the mysteries with a six-page guide that includes before, during, and after reading discussion questions and...
Curated OER
Learning to Hate Math
Give your class a different kind of reading assignment with the text included here. Anne Miller's essay "Learning to Hate Mathematics" details a hatred of math that grew from early childhood and still haunts the author today. After...
Curated OER
Secret Code
In this multiplication puzzle worksheet, students find the products to 18 elementary multiplication problems. They solve the code using the letters assigned to each product. They read the secret message.
Curated OER
A Secret Code
In this addition and subtraction worksheet, students solve for problems to complete the riddle about George Washington. Students solve 20 two digit problems of addition and subtraction with some regrouping necessary.
Balanced Assessment
MasterMind
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...