Great databases can be hard to come by, especially ones that don’t cost an arm and a leg to subscribe to.  WorldWideScience allows students to search hundreds of international scientific databases at once and provides links to the full text of the articles or a comprehensive citation when the full text is unavailable.  Students can filter results by publication type, author, subject, or date and can even search in other languages and translate the results into English.  A very robust advanced search function makes WorldWideScience a good choice for anyone doing scientific research.

Website: http://worldwidescience.org/
Subject: Science
Grade Level: 5-12
Price: Free