Özet:

The study aimed to investigate the effects of modelling and computer assisted instruction (CAI) on academic achievement of the students. For this purpose, the study was conducted with 132 second grade students who were attending Education Faculty, Science and Technology Education Department of 19 Mayıs University. Students were distributed into three groups as control, modelling and computer assisted instruction groups and the topic of cell division was taught by the use of three different methods. According to the pre and post- test results, there were significant differences between the groups in terms of academic achievement. Whilst control group students to whom topics were taught by the use of traditional method were found the less successful group, modelling group was found the most successful group. Study results revealed that students to whom topics were taught by the use of supplementary tools were more successful.

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