Decode the Barcode

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Source Institutions

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In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail. Hints within the activity help learners understand how the code relates to ZIP codes. This activity incorporates problem solving and addition skills.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
5 to 10 minutes

Estimated Materials Cost:
free per student

Age Range:
Ages 8 - 14

Resource Type:


Materials List (per student)

  • computer with Internet access


  • Engineering and Technology
    • Computing
      • Information Systems
    • Technology
      • Information and Communication
  • Mathematics
    • Number and Operations
      • Number Systems
      • Operations
    • Reasoning and Proof
    • Representation
  • The Nature of Technology
    • Technology and Society


To use this activity, learners need to:

  • see
  • read
  • use keyboard
  • use mouse

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access