Özet:

This is the high school 5. The Class Science Course is designed to determine how writing a letter to the teacher in the Light Unit affects students’ academic success and attitudes towards the course. The sample of the study consists of 36 students studying in the 5 / A - B branches of a state-affiliated secondary school in 2017 / 2018 education - academic year. The 5 / B branch as a experimental group in the study was also selected with the 5 / A branch curry as a control group. The level test in 3 branches before the application was conducted in order to determine whether students have significant differences in terms of success and there was no significant difference in 5 / A - B classes. In the study, a experimental group of students were given a letter to the teacher at the end of the subject during the course of Science Science Light Unit. Students in the study; experiment and control group 5. The prepared test for the Class Light Unit is applied as a pre-test and final test. The survey screening form has been used to get students’ opinions about this study. The study resulted in the SPSS package program. The results of the study showed that the "Letters Writing Event" has shown students' academic achievements, and according to the survey scan form results, the experiment group has changed students' attitudes in a positive direction.

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