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Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Exponential Functions
This tutorial explains exponential functions and provides links pertaining to topics on them. You will learn to use the exponent keys on your calculator, to graph exponential functions, and to solve compound interest problems.
University of South Florida
Florida Center for Instructional Tech: Wacky Water World
At this site investigate linear equations with a graphing calculator. Data is gathered from a hypothetical situation of purchasing tickets at a waterpark.
Wyzant
Wyzant: Calculators Index
Online calculators will help you solve equations, factor, complete the square, simplify, graph, and substitute.