Procedure of Operationalizing Advance Organizers (POOAO) is a new procedure that can be utilized by researchers to construct effective advance organizers. The procedure is based mainly on the Ausubelian propositions related to advance organizers and on empirical findings of advance organizer research. The eight steps involved in the procedure are outlined and discussed. They include: (1) analyzing learning materials; (2) mapping the cognitive structures of learners; (3) determining characteristics of the advance organizer; (4) estimating the readability of the advance organizer; (5) checking the understandability of the advance organizer; (6) assessing the study time of the advance organizer; (7) valuing the validity of the advance organizer; and (8) revising the advance organizer. (Author/JN)