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This preliminary study aims at developing a program to improve teacher candidate students’ conceptions on the topic of states of matter and their changes by using Predict-Observe-Explain (POE) strategy. This study employs pre-experimental method. The subjects involved were third-semester students of a primary school teacher education study program (Pendidikan Guru Sekolah Dasar PGSD) in a university in West Java, Academic Year 2017/2018. The research instrument was a five-tiered diagnostic test in the form of multiple-choice. The instrument had gone through expert and empirical validation processes, which were provided before and after the implementation of the POE strategy. The data obtained were analyzed through descriptive and inferential statistics (t-test). The results showed that the use of POE strategy was able to improve the students’ comprehension on the concept of states of matter and their changes either at macroscopic level (N-gain 0.32, p=0.00), submicroscopic level (verbal N-gain 0.44; p=0.00, and visual Ngain 0.49; p=0.00), or symbolic level (N-gain 0.41; p= 0.00). The acquired N-gain indicated the need for further research to improve the course program of states of matter and their changes using the POE strategy to obtain higher N-gain that indicates the need for improvement of the program, including the processes and aids of the course.

Prospective Primary School Teachers’ Conception Change on States of Matter and Their Changes through Predict-Observe-Explain Strategy