# Activities

• • • ##### Subject Area

• Math: Algebra I: Data Analysis
• Math: Algebra I: Statistics
• Math: PreAlgebra: Probability, Statistics and Data Analysis
• Math: Statistics: Probability and Random Variables

• ##### Author 9-12

60 Days

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

CBR™/CBR 2™
TI Connectivity Cable

• ##### Other Materials
This is Activity 14 from the EXPLORATIONS Book:
EasyData Activities: Modeling Algebraic Functions with Data Collection Activities.

The following materials are required for this activity:
• Stick with plate taped to end

## Get on the Stick

#### 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

• 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.

• 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