Curated OER
Secret Code Spotlight
In this secret math code worksheet, students 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. Students 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...
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 worksheet, students divide one and two digit numbers and come up with a secret code at the end. Students complete 11 division problems.
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...
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Although the riddle is an outdated political reference, this math challenge is a good practice in operations and domain-specific vocabulary.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
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
Multiplying Decimals
In this mathematics learning exercise, learners 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...
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 instructional activity, 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...
Computer Science Unplugged
Count the Dots – Binary Numbers
Did you know you can send a message using only zeroes and ones? This interactive resource presents an introduction to binary numbers. Through code cards, pupils learn to convert binary numbers to decimal numbers.
Curated OER
Mystery Code
In this fractions secret code worksheet, students solve 9 problems that require them to add and subtract using fractions. Students use their answers to decode a mystery message.
Curated OER
Secret Code Math
In this math worksheet, students solve the problems in the box grids with the operation of addition. The answers are used to create a secret code message.
Curated OER
Add 2-Digit Numbers in Different Ways
In this solving addition word problems worksheet, students use secret code cards and counters to problem solve. Students solve six problems.
Bowland
German or English?
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.
Curated OER
Squigly's Secret Easter Code
In this math instructional activity, students practice solving the code in order to decipher a secret message that is based upon the theme of Easter.
Curated OER
Fifty Dollar Word$
In this proving words have an exact value of $50 worksheet, students use the "Secret Coded Letter Values" to encode each word and use any math operation in any order or combination. Students encode 5 answers.
Curated OER
Goldentail's Rounding Railroad
In this number puzzle worksheet, students solve 24 equations in each of two sets of multiplication and division problems. They circle each answer and round them to the nearest whole number. They use the secret code that is shown in a box...
Curated OER
The Code
In this the code worksheet, students study, review and calculate which of six codes is the correct one to enter a computer with a top secret scientific breakthrough in it.
Curated OER
Fourth of July Addition and Subtraction
What is Thomas Jefferson signing? Focus on American history with this cross-curricular math puzzle. Learners utilize addition and subtraction skills to solve the mystery of the Fourth of July. All numbers are 3-digit, and there are no...