Good questions should begin good research.
Practice and teach a variety of questions using:-

        Olympic examples of questions using Bloom's Taxonomy

          
  Joan Dalton's "Applying Bloom's Taxonomy"

                  Jamie McKenzie :   

  For more information go to:-  

Please Read - The Power of Kids' Own Questions by Larry Taylor

Questioning Techniques by Jo Painter

"A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening  the landscape of idea."

                      John Anthony Ciardi (1916-86)
                      American poet, critic