Check out these links to WebQuests to use with your students:
The following link contains collections of webquests divided into age categories ( ages 5-8, 9-13... through adults) on a variety of topics including research skills, book titles, authors, math topics, etc...
Grades K-2...check out Be a Website Sleuth! and be sure to browse the special section at the bottom of the page specifically for ages up to age 6.
These WebQuests and MiniQuests were created by Anne Arundel County Teachers using the Maryland Learning Outcomes. It is organized by grade level and includes webquests for all subject areas.