Picture this:
You have your whole class clustered around your 14" monitor, introducing a website and some of its features.  Several voices pop up from the back of the pack - "I can't see!!!"

Did you realize you can make webpage fonts larger?  Here's how:

Click on Edit
Select Preferences
Under Appearance, choose Fonts
A new window pops up.  Next to the Variable Width Font which is defaulted to Times New Roman is the size field.
Select the down arrow next to 12 for more selections
Choose 16 and click OK
Notice the difference in the text on your web page now!

The font will remain at 16 until you change it.