Online resources for Suffixes and Prefixes?

I am trying to teach my student how to read a word in parts… root word, suffix, prefix.
I have found this is much more difficult than I thought it would be. So I tried searching the web for online lists of suffixes and meaning and practice sheets. All I have found is worthless. Anyone know a good online resource for this?

Courtesy of Wikipedia, I present to you

List of English prefixes
List of English suffixes