clipped from: blackboard.jeffco.k12.co.us   
Grokker http://www.grokker.com/ displays results in circles of related links. The bigger the circle, the greater the relevancy and result pool of the search. It takes a few seconds to build the map view once clicking on it.

 

Visuwords http://www.visuwords.com/ is a tool from which students can create an instant word wall. Type in a word and the program generates a web of synonyms.