If the window size seems too small, don’t worry because the screen automatically grows in height and width as you get close to any particular edge, which is pretty neat. When you first open the program, you’ll just see a blank screen with a graph paper type background that says Write math here. The first result should be the Math Input Panel.
The easiest way to load it is by clicking on Start and typing in Math. Now let’s take a quick look at how you can use the Math Input Panel.