Google Search Tricks on Prezi
I am certainly going to be showing my 6th graders and High school students this. The next resource I stumbled upon is the Google Help page on Exploring Google Search. Here users can look at the various searching tools. Here's a preview of what you can search for.
When you click on any of the "hot links" listed above you will be taken to little search boxes with mini web browsers next to it. This will show you a real life example on how you can modify/use the search feature.
This can easily be added to a curriculum to help students successfully search on Google.