Activity Overview
In this activity, students' create a plot showing the heights of some of their classmates. They determine the extreme values and the median for the height data and construct a box-and-whisker plot to summarize the height statistics.
Before the Activity
Connect the CBR™ to the calculator using the link cable
Run the Ranger program on the calculator
See the attached PDF file for detailed instructions for this activity
Print pages 39 - 44 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Follow the Activity procedures:
Prepare the CBR for data collection
Detach the CBR from the calculator and hold it with the detector pointing toward the ground, 0.5 meter above the head of the tallest student
A group of students walk beneath the CBR one at a time, as the CBR records motion data
Collect data and re-attach the CBR to the calculator
Examine the distance values in the graph and record the peak y-values
Find the median, lower quartile and upper quartile values
Construct a box-and-whisker plot and summarize the data
After the Activity
Students' will collect data, analyze the results, and answer questions under the "Looking at the Results" section.
Review student results
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary