The aim of this study is to determine to what extent the Primary School Teachers can accomplish the effective teacher attitudes in science lessons. In this context, the observations of 83 primary school preservice teachers, who studied teaching practice course, have been used. In order to determine the accomplishment levels of primary school teachers’ effective teacher attitudes in science lessons, the preservice teachers have been asked to observe the primary school teachers in the schools they attend for the practice lessons and the accomplishment levels of science education teacher’seffective teacher attitudes has been determined via an observation form including 25 questions in total. Descriptive- survey research has been used in the study and the data have been analyzed through frequency and percentage. When the findings of the study have been evaluated in terms of the preservice teachers' observations, it has been concluded that the teachers prepare the setting for the active participation of all the students in the lesson and they are tolerant for the mistakes the students make during the learning process. However, it has also been concluded that the teachers do not state the objectives of the lesson clearly and definitely, they do not take the interest levels of the students into consideration and they do not spare enough time for the students to think about the answers after they ask the questions.