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
Recommendations:
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.