The Interviewer's principal tool is himself, and as we all differ from one another, we are all using different tools. Slavish imitation of somebody else's technique is like buying a Suit or dress because it looks nice on somebody else. This occurs especially with children because the roles of the adult interviewer and the child are unequal. The child may answer questions put forth but may not feel free enough to elaborate on points that the teacher did not think of asking.
Most people dislike having to answer the same question more than once.
The main distinction between fact finding and fact-giving interviews is who decides which facts are to be given. A teacher who is lecturing is engaged in a fact-giving interview. In this type of interview, the person receiving the information must want to receive-he or she must be tuned in. Adults sometimes insist upon engaging in fact-finding of irrelevant data, to the point of turning off the young interviewee. The child who fails a mathematics test and bursts out crying does not need a teacher to carry on a fact-finding interview at that moment.