Related Links
Step Function Problems
   Coprime Integers
   Phone call problem
   Four Fours problem
   Limits on graph

Telephone Information
   Domestic Rates
   Long Distance Rates
   Phone Card Rates

Telephone Humor
   Long distance
   Psychiatric Hotline
   Non-stop ringing

Other Applications
   Postage Rates
   Internet Service Providers
   Advertising Rates

emoticon Unsure of Which Telephone Plan to Choose?
To view the emoticon, tilt your head counterclockwise.

One Rate, True Reach Savings, Sweet Sense, Most II, All America Plan, Friends and Family, and the list goes on. Which telephone savings package would you choose? How much money would you save by choosing a specific plan?

This activity will help you use step functions as a means of determining the most appropriate calling package for your household.


[introduction] [step functions] [scenarios] [telephone bill] [grading scale]


Please send comments, questions, and suggestions to Evan Glazer at Additional high school math activities for the World Wide Web can be found in my listing of network projects.

1998 Summer Institute || Onsite Participants || Online Participants || Sum98 Staff || Agenda