Education Technology

Analyzing an Electricity Bill

Published on 11/04/2008

Activity Overview

This investigation guides the students through using a piecewise function to model an electric bill.

Before the Activity

  • Download the electric bill tns. document and link to student calculators. Note: The teacher version is electric bill SOL: it includes completed calculations, functions, graphs and tables.
  • Distribute the student worksheet. Information from an electric bill is included on the worksheet in the same form it appears on an actual bill, with working space provided.
  • During the Activity

    Distribute the student worksheet. Information from an electric bill is included on the worksheet in the same form it appears on an actual bill, with working space provided.
    The TI-Nspire document allows students to investigate each piece of the piecewise function for a thorough understanding.
    The instructor should make certain students understand the difference between Total Energy Charge (DOES NOT include resource adjustment and state sales tax) and Total Charge This Service Agreement (Includes resource agreement and State sales tax).