In this lesson, scholars become familiar with the most important buttons on the TI-30XS MultiView calculator. You will learn how the 2nd key activates blue functions, how the Mode key changes calculator settings, and the difference between Clear and Delete when correcting mistakes. You will also practice using the arrow keys to move through expressions and the Enter key to calculate results. By the end of this lesson, you will understand how each core key works and feel comfortable navigating the calculator.