Education Technology

Math TODAY: Internet Subscribers Soar

Published on 06/09/2008

Activity Overview

Students will create a scatter plot of the number of Internet subscribers during 2004 through 2008 using the USA TODAY Snapshot "Internet phone subscribers soar." This activity will allow students to explore real-life data that will be modeled by a logistic function.

Before the Activity

See the attached Teacher Edition PDF file for notes and guidelines for this activity. The Technology Guide PDF file includes step-by-step calculator instructions with screen shots.

If you are using the TI-Navigator™ Classroom Learning System, see the TI-Navigator Basic Skills Guide PDF file for information on how the system can be integrated into your activity.

During the Activity

Students will:

  • model real-life data with a logistic function.
  • use and interpret the average rate of change to approximate instantaneous rate of change.
  • evaluate and interpret the meaning of the derivative.
  • evaluate and interpret the meaning of the derivative at the inflection point of a graph.


  • Directions
  • Distribute the Student Edition PDF file to your class.
  • Follow the activity procedures outlined in the student document.
  • You may use the Transparency PDF file to display a large image of the USA TODAY graphic during the activity.
  • After the Activity

    Distribute the assessment questions or send the attached LearningCheck™ assessment to your class to gauge student understanding of the concepts presented in the activity.