Asking good questions is an art. Teachers need to learn to ask good questions and so do children.
Teachers ask lots of questions.
Studies by Cunningham, Gallagher, et. That doesn't require much thinking. Bratt found that teachers can change their questionning strategies and it only takes three lessons. The most important findings are that we need to move our questionning to higher levels in the Bloom taxonomy and ask more questions at the analysis, synthesis and evaluation levels. Secondly, that we need to spend time consciously studying our questionning behavior in order to change it.