(Source: Types of Questions initiating a WebQuest: A Mental Model)
In this article by Dea Conrad-Curry, the art of questioning is described. Conrad-Curry gives Research examples about content that teachers are wanting students to explore. She then provides some questions that will elicit the same knowledge but promotes higher order thinking. The types of questions are: Understand, Figure out, Decide, Build or invent, Persuade or convince, Challenge or destroy, Acquaint, Dismiss, Wonder, or, Predict.
The article falls down by not describing the questioning involved in Problem-Based Learning - the basis of WebQuests. Again, it ascertains by not exploring PBL that WebQuests are just "inquiry-based" projects.
However, the examples that Conrad-Curry explores are very helpful for teachers wanting to get students to think deeply about a particular subject.