One of the new features in Office 2016 is “Ink Equation”. This feature allows you to insert equations into Word, Excel, and PowerPoint by handwriting them. Ink Equation is designed to be used with a tablet pen on a tablet PC.

However, you can use Ink Equation with other input devices, including a mouse, and I’ll show you how to use Ink Equation with a mouse to insert an equation into Word.
To do this:

1. click the “Insert” tab.
2. In the “Symbols” section, click “Equation”.
3. In the “Tools” section, click “Ink Equation”.
4. The “Ink Equation” dialog box displays. Using the mouse (or other input device) to write your equation in the light yellow grid area. You’ll see a very small black dot. That’s your cursor for writing your equation. The grid area will expand up and to the right as needed.
5. When you’ve finished writing your equation, click “Insert” to insert it into the equation box you added to your Word (or Excel or PowerPoint) document.