Abstract
In order to clarify the special features of teaching behaviors of student teachers, we performed the instructional analysis of some science lessons in the elementary school by using the method of OSIA. As a result, we confirmed that student teachers serdom used the teaching tactics categorized "substantive clarification" and "appraisal behavior" while often used the tactics categorized "initiation of substantive information" and "managerial behavior". Moreover, we found that student teachers inclined to ask the open type questions more frequently than the closed type questions in contrast with generally accepted view.
