The advantages of using interviews to diagnose children's needs are discussed. General interview strategies and specific questions for gaining insight into a student's understanding of the four operations are presented. (MNS)

Suggestions for group diagnosis are given. Examples of questioning techniques, test items, and mini quizzes are presented. (MK)

Described is an alternative way for classroom teachers to assess students' performance in mathematics. The interview process is presented in stages: initiating the interview, the questioning stage, formulating and testing hypotheses, and intervention. (KR)