Students explore the TI-83/84 on their own by following the step-by-step instructions. This intro to the graphing calculator focuses on using the WINDOW effectively. It's incredible how hard it is for students who are just starting to use the TI calculators to understand how to get a correct window. This, at least, gets them to start to practice that. Many of my students are intimidated by the many buttons of the TI-83/84, especially because it is so much less intuitive than their calculator apps on their phones. They've found this to be a very useful exercise and I have them keep it in the front of their binders.