Several of the programs were adapted from the following resources:
Glencoe. Algebra 1. New York, NY: Glencoe/McGraw-Hill, 2001.
Glencoe. Algebra 2. New York, NY: Glencoe/McGraw-Hill, 2001.
Lucas, Christine A. and Jill Baumer-Pina. Graphing Calculators in the Mathematics Classroom. New York, NY: Glencoe/McGraw-Hill, 1997.
Command information was taken from the following:
Texas Instruments. TI-83 Graphing Calculator Guidebook. Texas Instruments Incorporated, 1996.