SortFix is a new way to search; search on quadrilaterals for example and note the power words returned.
One or more of these can be added to the search to refine it. For example to return sites on types and properties of quadrilaterals:
It is possible to drag terms to the remove box to exclude them from the search and any term can be dragged to the dictionary box for a definition.
This seems a great way to introduce students to more advanced searching, certainly worth experimenting with.
The FAQ explain further options – note the advanced user options for example.
This YouTube video from SortFix provides an excellent introduction.