Curated OER
Mathematical Treasure Hunt
The hunt is on! Young mathematicians follow clues and complete a series of ten math puzzles as they try to crack Dr. Integer's code and find the location of his hidden treasure.
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Proverbs Puzzle #2
In this proverbs puzzle, students decode letters to determine a familiar proverb. Each key word is represented by the first initial letter. This puzzle contains approximately 15 famous sayings. A link to the answers are...
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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...
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Factoring Puzzle
In this factoring puzzle, students factor given equations with one and two variables, exponents, and parenthesis. This one-page worksheet contains 19 matching problems.
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Codebreakers
In these code breaking activity worksheets, students complete 9 pages of activities for math puzzles and code breaking activities.
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Math Vocabulary Secret Decoder Worksheet
In this math vocabulary worksheet, students match the letters to other letters to solve the vocabulary words. Students complete 15 math vocabulary words.
Balanced Assessment
Birthday Card
Add a twist to the practice of simplifying expressions. The task asks scholars to decode a mathematical puzzle using their knowledge of expressions. If they are able to write and simplify the expression, the mathematics behind the puzzle...
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Fraction Message
Students practice identifying fractional parts represented in pictures and phrases. In this fraction instructional activity, students determine the proportion represented by common time and money phrases such as "3 hours in a day"....
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Cryptarithm: If Santa Did Exist
In this cryptarithm worksheet, students decode an amusing puzzle that will prove the existence of Santa Claus. There is 1 encrypted puzzle to solve with a provided answer.
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A Mars Bar Fraction Hunt Lesson for Grades 3-5
Students use their knowledge of fractions to decipher word puzzles. In this fraction lesson plan, students use common fractional parts to divide words into the letters needed to make a new word. They complete 28 examples to find a clue...
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Cryptography Implementation
Pupils explore cryptology. They write a research paper on cryptography. Using linear equations, students invent a code and write a secret message. Pupils complete cryptography puzzles.
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Does the falling tree make a sound if no one if there to hear it? (or communication via encryption)
Students explore encryption. They discuss the importance of cryptography in our daily lives. Students use games and cryptography to discover transformational geometry and modulo systems. They design their own encryption puzzles and...
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Personal Telephone Numbers: Deciphering a Message
In this deciphering a message worksheet, students decipher 23 names of famous people given a phone number. Students use the numbers and letters on a telephone key pad to decipher phone numbers into names.
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Math Vocabulary Decoding Activity
In this math vocabulary worksheet, students use a letter key code to match match vocabulary words to their definitions. A reference web site it given for additional activities.