Activity Detail
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Activity Overview

In this activity, students will match their motion to a given graph by moving back and forth in front of a CBR unit. They will then describe their movements by writing a piece-wise defined equation for the motion.

Before the Activity

  • Connect the calculator to the CBR 2™
  • Install the TI Connect™ software to analyze data on the computer
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 33 - 37 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 on the calculator
  • Set the CBR on a table so that it is aimed at the waist or chest of the walker
  • Place a piece of tape 0.5 meter from the CBR and then every 0.5 meter for 4 meters
  • Walk back and forth in front of a CBR and observe the distance versus time graph displayed on the calculator
  • Divide the graph into sections and record the coordinates of the first and the last points for each section
  • Find the y-intercept of each line to determine the starting position
  • Calculate the slope to find the velocity

    		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

    		Other Downloads




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    Subject Area:
    Math : Algebra I : Linear Equations and Functions

    Author:
    Texas Instruments

    Level:
    9-12

    Activity Time:
    60 Minutes

    Device:
    TI-83 Plus Family, TI-84 Plus Family

    Apps:
     

    Software:
    TI Connect™

    Accessories:
    CBR™/CBR 2™, TI Connectivity Cable, Unit-to-Unit link cables

    Other:
    This is Activity 7 from the EXPLORATIONS Book:
    Modeling Motion: High School Math Activities With The CBR

    The following materials are required for this activity:

  • Meter stick
  • Masking tape


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