Investigation Organizer: Grade 5, Chapter 3

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Grade 5, Chapter 3 Investigation Organizer:

Crack the Code


Summary: Cryptographers are people who put messages in code. They use combinations of letters, numbers, and mathematical ideas. Your group will create a code, and then try to crack a coded message from another group.

1. Plan It

A. Start your code. List the letters of the alphabet. Leave five lines blank after each letter.

B. Write a number. Below each letter, write a number.

[Checkbox] Our list completed


2. Put It Together

Keep coding!

Take your time while completing each of the following steps.

[Checkbox] Coding completed


3. Wrap It Up

A. Use your code. Use your group's number code to write a sentence. You can use a sentence in a book, or make one up. Separate each number that represents a letter with a slash.

B. Use your decoding power. Exchange your coded sentence with another group. See which group can decode the other group's sentence first.

[Checkbox] Decoding completed


4. Discuss Your Results

[Checkbox] Review completed


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