Education Technology

Intersection

Published on 06/09/2008

Activity Overview

In this activity, students will investigate modeling the motion of two people to find where they will meet and at what rate each was walking.

Before the Activity

  • Connect the one calculator to one CBR 2™ unit
  • Download the TI Connect™ software to analyze data on the computer
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 27 - 32 from the attached PDF file for your class
  • During the Activity

    Distribute the pages to your class.

    Follow the Activity procedures:

  • Run the Ranger program
  • Collect data as two people walk toward each other and away from a wall
  • Observe the distance versus time graphs
  • Determine the slope and y-intercept for each line
  • Use the sign of the slope to identify the direction of motion
  • Find the velocity for each walker
  • Enter the two equations in the slope-intercept form in the calculator and graph them
  • Determine the point of intersection of the two lines
  • After the Activity

    Students will complete the Data Collection table and answer questions listed in it.

    Review student results:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary