Chemblog!

Specifically for this unit , you may want to make extensive use of the "solver" function in your Ti-83 calculator. (If you have a Ti-89, just talk to it and it will obey your every command; you can even control other people's mind with it- see page 857 of the Ti-89 instruction manual).
Here are a few sites that may help you:
http://www.acad.sunytccc.edu/instruct/sbrown/ti83/quadrat.htm#Enter
http://www.ncsu.edu/felder-public/kenny/papers/ti.html#SOLVER

This link shows how to graph the best fit line and to diagnose how well the data fits a straight line (r^2 = 1.000). We used this info to plot the Arrhenius and Clausius-Clayperon equations and we will use it for the nearly identical van t' Hoff equation. (The equations are almost identical because all three equations are based on/ caused by the distribution of molecular speeds/KE's at a given temperature!).

http://www.keypress.com/SIA/downloads/CalculatorGuidePDF/SIA_Calc_Guide_Ch03.pdf

For Ti-89:
solve any equation: http://pages.infinit.net/carl/TI89tutoen.html#equation

http://www.prenhall.com/divisions/esm/app/calc_v2/calculator/medialib/Technology/Documents/TI-89/desc_pages/ti89techskills2.html