Education Technology

Math TODAY for TI-Navigator System - Paying College Tuition

Activity Overview

Students will write exponential equations based on the percent of increase of college costs and will graph and interpret these equations. Students will then use an inflationary equation based on the USA TODAY Snapshot, "Paying college tuition" to project college costs using another factor which affects future expenditures pertaining to higher education.

Before the Activity

Setup your TI-Navigator™ System

  • Make sure you are familiar with the following functions: Send to Class, Collect from Class, Screen Capture, Quick Poll and Activity Center

  • Your students will need a TI-83 Plus or TI-84 Plus graphing calculator, either working in pairs or individually
  • Download the attached activity resource files from all three sections to your computer

  • Multimedia Projector for sharing the Activity Center, Quick Polls and Screen Captures with your students

  • TI Keyboards for students to easily answer the LearningCheck assessment questions

  • During the Activity

    Students will:

  • Calculate the percent of change
  • Write exponential equations in the form y = a(b)x, given a and b
  • Use the exponential equations to analyze and make predictions
  • Graph exponential functions

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

  • After the Activity

    Access your students' understanding by using Send to Class, LearningCheck™ App and Class Analysis.