Webquests are an online learning activity which have the potential to produce rich learning for students.  They were originally the concept of Tom March and Bernie Dodge.

Educational Podcasting Blog EdTechTalk has interviewed Bernie Dodge and shared this in a Podcast on Webquests.  I haven’t had a chance to listen to it yet (it’s about 40 minutes), but it’s a good opportunity to hear about webquests from an expert… or, rather, the expert.
If you’re new to webquests, or want a refresher, the best place to go is still The Webquest Page, which Dodge maintains.  It also has tons of webquests that you can search through and use in your classroom.