Use paint to teach about cryptography. Scholars explore public key cryptography by attempting to mix a secret color using paint. After the activity, they investigate the Diffie-Hellman method using prime numbers, exponents, and modular arithmetic.

Concepts

cryptography, secret codes, exponents, cipher, technology resources

Show More Show Less

Instructional Ideas

• Collaborate with the art department for the activity (involves paint)

Classroom Considerations

• Activity requires a variety of materials; see teacher guide for complete list
• It is helpful if learners are familiar with exponents and modular arithmetic

Pros

• An optional writing activity challenges learners to take the activity one step farther
• Includes student worksheets for each part of the lesson

Cons

• None

Common Core

6.EE.A.1 8.EE.A.1 8.F.B.4