While a Google search will likely find the surface web resources you're looking for, sometimes you want to narrow it down - especially for younger students - or drill deeper into portals and databases - especially for older students
(remember...free does not mean you shouldn't give credit. Always attribute work to the creators, even if you edit the original)
When referencing your resources, what should it look like? Check these sited below for some help.
EasyBib shows students where they can find the different pieces of information they need for their bibliography, not simply what they need. examples pointing out where a student can find the different things they need for their bibliography. PLUS will import to your Google Docs
Son of a Citation Machine
Open University How to reference sources some straight forward examples with required information for different types of sources.
Copyright & Fair Use
Code of best practice - Understanding issue of copyright, fair-use and education
A Teacher guide to Fair Use - Provides a simplified chart describing appropriate fair-use of different media.
Some Basic Search Engines
Beyond the Basics of a Google Search
Don't just use the basic Google.com search page. Dig deeper for the more relevant, interesting article, papers, books and more.
Here are a couple examples of some custom searches. One for elementary students looking for biography info. It directs students to specific sites. The other helps student find "copyleft" resources for use in media presentations.
Try creating your own Custom Search Engine for your next class topic, and embed the widget into your class site. It's simple and helps students focus their research.