Education Technology

Math TODAY: Humidity Makes Air Feel Hotter III

Published on 06/09/2008

Activity Overview

The USA TODAY Infograph "Humidity makes the air feel even hotter" shows the relationship between humidity, air temperature and the heat index.

Students will create two scatter plots and, based on the value of the correlation coefficient (r2) and determine the best fit model for each scatter plot. The graph will be used to describe the behavior of the dependent variable for each model as the independent variable increases.

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:

  • create a scatter plot of real-world data. h solve problems using numerical, algebraic, and graphical models.
  • analyze end behavior of a function.
  • identify appropriate basic functions with which to model real-world problems.


  • 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.