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Recommended for: Grades 4-8

Resource: Finding the Right Crystal

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Media Type:
QuickTime Video

Length: 1m 41s
Size: 4.7 MB

In this video segment from Cyberchase, the CyberSquad has to find a crystal that is between 65% and 85% orange in order to power up their escape from the Hacker. The CyberSquad manages to describe each crystal's colors using fractions, but then they must convert the fractions into percentages in order to easily compare the amounts.

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Transcript (Rich Text Format Document)

View Citation

Teachers' Domain, Finding the Right Crystal, published August 26, 2008, retrieved on ,
http://www.teachersdomain.org/resource/vtl07.math.number.per.rightcryst/

Frame and Focus
Follow Up
Connections
Standards

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Here are some Frame, Focus and Follow-up suggestions for using this video in a math lesson.

What is Frame, Focus and Follow-up?

Frame: If you got 80 out of 100 questions correct on a test, what would your percentage of correct answers be? What fraction describes the number of questions you got correct? Are fractions and percentages related? How?

Focus: As you watch this segment, notice how the CyberSquad figures out what fraction of each crystal is orange. Write down these fractions. Then watch as these fractions are converted into percentages. How is this done?