Advantages of questioning strategy

• Asking questions frequently during class discussions is positively related to learning facts.
• Posing questions before reading and studying material is effective for students who are older, high ability, and/or known to be interested in the subject matter
•  foster students meta cognition 
• Build creative and inventive outcomes through a capacity for question finding.

  Disadvantage

• Minimum coverage of the context
• challenging for different kind of learner
• calling students randomly maximizes incorrect response that discourages the students
• time consuming
• Increasing the frequency of classroom questions does not enhance the learning of more complex material
• Very young children and poor readers tend to focus only on material that will help them answer questions if these are posed before the lesson is presented.