One of the most difficult parts about teaching math online is that it is cumbersome to represent math digitally. One of the best ways to overcome this is to utilize Aviary. Aviary is an awesome tool that will "snip" anything that is on the web and you can host it online, it is also part of the Google Enterprise Suite of available tools.
You can find out more at Aviary.com.
I like to use the Google Chrome Aviary Extension. It is easy to install, even if you do not have Administrator rights on your computer. Just click the Install button. It will then appear on your browser bar on the right.
It will then appear on your browser bar all the way to the right.
Now, the Aviary Extension is installed and ready for use.