Association for Supervision and Curriculum Development (ASCD)
Ascd: The Right Questions
Learn the Question Formulation Technique to help students express their thinking without having to depend on teacher questioning to peak their curiosity. There are 6 steps and examples of use in the classroom.
Edutopia
Edutopia: 5 Ways to Help Your Students Become Better Questioners
The following blog gives techniques to encourage more questioning in the classroom environment.
Other
Scholastic: Helping Students Develop the Ability to Ask Good Questions
This article details ways help students ask quality questions during a classroom discussion. Examples and an activity are provided.