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Decoding Machine
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In this math lesson, learners explore variables and their uses.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-292.png?itok=RXlaKz-t)
Fingerprints
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In this activity, learners examine their fingerprints and learn that they can be categorized by shape, but each fingerprint is unique.
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Make Matt's Coder/Decoder
Source Institutions
In this Cyberchase activity, learners make decoders to send and receive secret messages. Learners make the device out of two 8-ounce cups and two code strips.
Send Secret Messages
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In this activity, learners write a secret message in "invisible ink" and then use chemistry to view the writing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-638.png?itok=ElSZ1bn9)
Yabba-Dabba You
Source Institutions
In this activity, learners explore genes and traits. Learners investigate their fingerprints and learn how to categorize them.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-281.png?itok=XYfbgMtv)
Scytale Messages
Source Institutions
In this activity, learners use a soda can to decode a secret message. Learners wrap scytale (pronounced ski-tally) code around a can and challenge friends to see if they can crack the codes.