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Patterns in Pixels
Source Institutions
This activity (page 2) draws upon a familiar, computer-based concept related to visual resolution: pixilation.
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Decode the Barcode
Source Institutions
In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail.
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What am I?
Source Institutions
In this activity, learners examine nanoscale structures of common things.
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Information Hiding: Sharing Secrets
Source Institutions
This activity about cryptographic techniques illustrates a situation where information is shared, and yet none of it is revealed.