K12 Reader
The Note Was in Code!
While it's quite an ode, this short poem uses the long /o/ sound repeatedly in words like code, note, alone, and phone. Kids read the selection and answer three comprehension questions about the text.
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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.
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Break the Code!
Seventh graders crack a code using binary numbers. In this technology lesson, 7th graders explain how binary codes can represent letters and numbers. They create their own code and exchange them with their classmates.
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Detective Digis and the Computer Caper
Mathematicians participate in an hands-on activity to investigate the binary number system and write messages in binary code and have classmates decipher the messages. A said video on the topic does not seem to be available, but the...
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Shh...It's a Secret!
Students explore codes, decode secret messages, and create codes of their own to use with their friends. They examine the use of gestures, letters, symbols and numbers in codes.
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Master Spy
Students explain that a code is a system of symbols, letters, words, or signals that are used instead of ordinary words and numbers to send messages or to store information. They practice deciphering a variety of secret codes used in...
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Algebra: Introduction to Algebraic Expressions
Seventh graders, in an introductory algebra class, code and decode messages using substitution ciphers. Role-playing as mathematicians, they work in groups to decipher several messages, one of which translates to "math is awesome."
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U Boat Hunt
Students recognize patterns and sequences in numbers. For this geometry lesson, students create rules to define the sequences and patterns they obsere. They translate coded messages as they dicuss navigational terms.
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Cookie Crisp Howl
Students are introduced to the vowel pattern that produces the /oo/ sound in words. Through matching, listening, and spelling activities, students recognize the phoneme /oo/ and it's placement in words. They write a message using words...
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Matrices: A Secret Weapon
Students perform operations with matrices. In this algebra lesson, students use cryptography and cryptanalysis to solve problems. They add, subtract, and multiply matrices.
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SHHH It's a Secret
Learners rewrite word problems using expressions and equations. In this algebra lesson, students use the correct variable to solve and write equations. They use the TI to graph their solution.