Activity Detail
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A Tall Story
 


Activity Overview

In this activity, students will use the motion detector to measure their current height and obtain a mean value. They will use this and earlier data to plot a graph of height versus age. Students will identify the mathematical model that reflects the pattern of the data and calculate the rate of growth in humans.

Before the Activity

  • Install the CBL/CBR Application on the students' graphing calculators using TI Connect™, or TI-GRAPH LINK™, TI Connectivity cable and the unit-to-unit link cable
  • Connect the TI-73 Explorer™ to the CBR 2™ unit
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 1 - 9 from the attached PDF file for your class

    		•

    		During the Activity

    		Distribute the pages to the class.

    Follow the Activity procedures:
  • Use the CBR to record three readings of the student's current height
  • Calculate the mean value
  • Gather measurements of student's height at earlier ages
  • Set up a scatter plot and get a Manual-Fit on the collected data
  • Convert the growth rate from inches per year to centimeters per year, and then to centimeters per month
  • Predict a person's height at various ages
  • Relate growth rate to the slope of the line

    		After the Activity

    		Students will fill in the Student Data Collection and Analysis Sheet.

    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 : PreAlgebra : Linear Functions
    Science : Life Science : Human Biology
    Math : Algebra I : Linear Equations and Functions

    Author:
    Texas Instruments

    Level:
    5-8

    Activity Time:
    60 Minutes

    Device:
    TI-73 Explorer™

    Apps:
    TI-CBL™/CBR™ App

    Software:
    TI Connect™, TI-GRAPH LINK™

    Accessories:
    CBL™/CBL 2™, CBR™/CBR 2™, Sensor - Motion Detector, TI Connectivity Cable, Unit-to-Unit link cables

    Other:
    This is Activity 1 from the EXPLORATIONS Book: Data Collection Activities for the Middle Grades with the TI-73, CBL™, and CBR™

    The following materials are required for this activity:

  • Meter stick (tape measure)


    • Report an issue with this activity