Activity Overview
Students use a CBR 2™ to measure the reaction time of catching a stick. They also learn how to interpret a box plot and make a five number summary of a single variable data set.
Before the Activity
Use TI Connect™ to download Vernier EasyData™ application
See the attached PDF file for detailed instructions for this activity
Print pages 127 - 134 from the attached PDF file for the class
Set up the calculator and CBR 2™ for data collection
During the Activity
Distribute the pages to the class.
Follow the activity procedures:
Divide the class into groups of three
Place a CBR 2 one meter below a stick with a tapped plate
Release the stick and catch it above the CBR 2 and measure the start and end time to find the reaction time
Conduct 5 trials for each student
Calculate reaction time for each trial and take the average of the trials for each student
Enter the values of average reaction time for each student on the calculator
Use the variable statistic function to calculate the five-point summary of the average reaction time of the class
Graph and interpret data in the form of a box-plot
After the Activity
Students analyze the results and answer the case analysis questions on the student worksheet.
Review student results
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary