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Recommended for: Grades 5-8

Resource: Speed of Ascent

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Media Type:
QuickTime Video

Length: 2m 03s
Size: 5.6 MB

In this video segment from Cyberchase, Hacker and the CyberSquad race each other to try to reach the Good Vibration, which is set on top of a tall monument. Two sets of stairs have appeared and Hacker chooses the one with larger steps in order to reach the top faster. The CyberSquad must use the stairs with smaller steps, but they soon notice that the number of steps in their staircase increase at a different rate than in Hacker's staircase.

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Transcript (Rich Text Format Document)

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Teachers' Domain, Speed of Ascent, published August 22, 2008, retrieved on ,
http://www.teachersdomain.org/resource/vtl07.math.algebra.pat.speedascnt/

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: Sometimes when we see a consistent pattern occurring we can record it using numbers and symbols. In math this is commonly called an expression. Think about patterns you may have observed, particularly those where something increases or decreases. Can you describe a pattern like this and record it in some way?

Focus: In this segment, watch as the two sets of stairs appear. See if you can identify the pattern in the number of steps in each staircase. [Note: Pause the segment after any increase, and ask students to predict which set of steps will reach the top first.]