Education Technology

Cricket Thermometers

Published on 06/09/2008

Activity Overview

In this activity, students investigate the relationship between temperature and number of cricket chirps. They learn to find the other value of a function when given one value of a function. Students use linear regression and plot a set of ordered pairs.

Before the Activity

  • Set up the calculator for data collection using the procedure described in the attached Appendix PDF file
  • 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 your class.

    Follow the Activity procedures:

  • Listen to the chirping, for each temperature record the number of chirps heard in a 15-second time period
  • Enter the temperature and the chirps per minute data using lists
  • Set the X and Y extremes and create a scatter plot
  • Perform a linear regression and study its graph
  • Enter the number of chirps per minute for the unknown
  • Examine the graph and record the intersection point of the two lines
  • The X value of the point of intersection is the temperature of the habitat where the unknown cricket was chirping
  • After the Activity

    Students will complete the Data Collection and Analysis page and answer questions.

    Review student results:

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