How can I make a text box bigger?

The size of content in Moodle™ is dependent on the size of your screen, your screen's resolution, and the level of zoom in your browser. To increase the space for of your course content, you can minimize the navigation drawer. To minimize the navigation drawer, click on the three horizontal lines that display at the top left corner of the page. You can also try increasing the zoom in your browser. 

To increase the size of a text box you can type text into, click and drag the bottom-right corner of the box.