Many have heard of Wolfram alpha, but have found it difficult to use. Here are some suggestions from Get Smart.
A collection of tools students can use to search the Internet
Gnosh is different type of search tool accessing multiple content types.
Google search challenge. Locate the answer to a question provided by Google.
Use Google Book Search to find books about literacy, reading promotion, and education.
Sweet search for education designed for younger students
RedZee.com describes itself as a family friendly seach site that restricts access to inapprorpiate content.
An experimental tool for teaching and facilitating effective search.
Simple Spark is a search tool that specializes in locating web tools and applications.
Specialized search site targeting teen age group. Heavy commercial presence.
