I enjoyed Ben Johnson's article for how teacher ask question and the remedy he gave for improvement. The remedy I will hold in memory, when in the classroom, ask a question, pause for three seconds then say a student name to answer the question. Johnson's points out this will make the other students think and have a better learning attitude because I've shown I may call anyone.
Composed specific questions are what educators should ask also. These questions should be what you want to know the student comprehended from a subject or what you think the student might ask you. Ask good questions.
Finally ask opened questions and questions where class participation is required in answering the question.