Language Arts/Math Activity
Mysteries sometimes include coded messages. In this activity, students will
create a code, write coded messages and decode each other's messages.
WHAT YOU NEED
WHAT TO DO
- Introduce the idea of coded messages to the students: Write the alphabet
across the chalkboard. Below the letters write the numbers 1-26, with "1" below
"A," "2" below "B," etc.
- Then write a simple, short sentence on the board and write the number
equivalent of the first word. Invite volunteers to write the number equivalents of
the remaining words.
- Divide the class into groups of three. Challenge each group to devise a code
based on a growing number pattern (e.g., 1, 2, 4, 7, 11 . . .). On a sheet of paper,
have students write the alphabet and the number that will stand for each letter,
just as you did on the board.
- Now have each student write a secret message (a short sentence) and encode
the message on another sheet of paper. Invite students to exchange and decode
one another's messages.
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