Chapter 10 Focuson Performance
Assessment
FOR
389
STUDENTS
Activity 10.11 Ferris Wheel Graph
Directions: Be as accurate as you can when showing your graphical solution.
30'
The Ferris wheel above is 30 feet in diameter and 5 feet above the ground. it turn s at a steady rate of one revolution each 30 seconds. The graph that follows shows the distance from the ground of a person (P) as a function of
time if the person is at the top of the Ferris wheel at time O.
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LO
20
30
40
50
Time (in Seconds)
On the same graph draw a second curve that shows a person's distance from the ground, as a function of time, if
that person is at the bottom of the Ferris wheel at time O and if the Ferris wheel turns at a steady rate of one revolution each 15 seconds.
Source: Adapted from Results from the Seventh Mathematics Assessment of the National Assessment ofEducational Progress (Silver and Kenney 2000).
From Mathematics Assessment Sampler, Grades 9-12, edited by Betty Travis and Anne M. Collins. Copyright © 2005 by The National Council of
Teachers of Mathematics, Ine. www.nctm.org. All rights reserved.