Özet:

The aim of this study was examining the effect of teaching the subject of Mixtures at 7th grade with cooperative learning methodology, seven principles and models to students' conceptual understanding at micro level. Quasi-experimental design was used in quantitative research methods and determined three experiment groups. In Cooperative Seven Principles Model Group (CSPMG), seven principles for good practice and models were used with cooperative learning method, in Cooperative Seven Principles Group (CSPG), seven principles for good practice were used with cooperative learning method and in Cooperative Group (CG), cooperative learning method in teaching the subjects. After the studies, the open-ended Model Drawing Test (MÇT) consisting of three questions that required students’ drawing at micro level was applied to the groups. For the analysis of data, mean, standard deviation of descriptive statistics, One Way ANOVA of significance analyzes were used. Later, the students’ misunderstandings in the groups were determined separately for each question of the MÇT and presented in tabular form. Finally, in the groups, the student drawings with these misconceptions were exhibited as if they were accompanied by the code (Ö1, Ö2, Ö3 ...). The end of the study, it was determined that the seven principles and models applications were improved statistically students’ conceptual understanding significantly in the subject at micro level. In addition, it has been found out that the students in the research groups have inaccurate models regarding the dissolution of salt, sugar and alcohol in the water of their minds.

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