There's a steep learning curve for kids and the TI-83 or TI-84. Here are 5 common errors and 5 nifty tricks that will make things smoother!
I split these up into 5 groups (1 common error and 1 nifty trick on each) so that students could either be put into groups or stations to learn each one. Then rotate or go out and teach each other what they learned.
See also my lessons on teaching how to use the table, window, and regression formula on the TI-83/84.