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You Can Say That Again!: Text Compression

Source Institutions

    Computer Science Unplugged
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You Can Say That Again!: Text Compression

This activity helps students learn how computers "compress" text by identifying repeating patterns of letters, words, and phrases. Students use poems or nursery rhymes as their source text, draw boxes around repeating parts, and use arrows to point to earlier parts of the text that can be used to "uncompress" the text. The boxes and arrows are then related to the numbers that computers use in compression. An extension has students try compressing a much longer story, "The Three Little Pigs."

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
30 to 45 minutes
Estimated Materials Cost:
1 cent - $1 per student
Age Range:
Ages 8 - adult
Resource Types:
Activity, Lesson/Lesson Plan
Language:
English, French, Italian

Materials List (per student)

  • OHP transparency made from OHP Master: You can say that again! (page 25)
  • Worksheet Activity: You can say that again! (page 26)
  • Worksheet Activity: Extras for experts (page 27)
  • Worksheet Activity: Short and sweet (page 28)
  • Worksheet Activity: Extras for real experts (page 29)

Keywords

Subjects

  • Engineering and Technology
    • Computing
      • Computer Science
    • Engineering
      • Computer Engineering
  • Mathematics
    • Algebra
      • Patterns
    • Data Analysis and Probability
      • Data Representation
    • Representation

Informal Categories

  • Computers

Other

Foreign language versions of this resource:

Components that are part of this resource:

Includes alignment to state and/or national standards

This resource is part of:

Access Rights:

  • Free access

By:

  • Bell, Tim; Witten, Ian; Fellows, Mike; Adams, Robyn; McKenzie, Jane

Rights:

Funding Sources:

  • Brian Mason Scientific and Technical Trust
  • Google Inc.

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