Questia is a library research tool for students to assist them in writing research papers.  Since most students do not have easy access to databases with more reliable sources, Questia provides students with tools to improve their research skills.  The site also provides students with tutorials to help them improve their writing and researching.  I have begun to implement some resources to help my high schools students improve their research skills, which is an area they often struggle in.  This seems to be the most promising tool for achieving that goal.

Quia is a site that allows teachers to access template tools for quizzes and other assignments, and students can access and take these assessments online.  This can be used in a variety of ways, including formal assessments and test preparation.  There are also shared activities teachers can access, which are well-organized by category.

This resource is appropriate for all grade levels, as it contains a variety of routines that can be applied to a wide range of content. There are routines that address most of the different levels of Bloom's Taxonomy, so it is easy to find one to fit your needs. I haven't used the resource yet myself, but certainly will in the future. In addition, the Digital Toolkit provides links to dozens of other digital tools and breaks down their uses in education. This is a great place to find other educational technology.