Check That Digit

This Check That Digit lesson plan also includes:

Charge it! Young scholars learn the mathematics associated with UPC codes, credit card numbers, and ISBN numbers. They apply algorithms and algebraic equations to verify the validity of these codes.

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CCSS: Designed
Instructional Ideas

  • Incorporate as an application of algebraic equations
  • Invite a local banker to speak about credit card algorithms
Classroom Considerations

  • Allow time to collect necessary materials

  • Includes historical information
  • Provides visuals to incorporate as examples

  • None
Common Core