چكيده لاتين :
The aim of this study is to determine the effect of Computer Assisted Instruction on the academic achievement of the students on the instruction of Physics subjects of 7th grade science lesson. This study includes Force and Pressure topics of 7th grade Science lesson. Two hundred and fifty three students joined in this study as control and experiment groups. Control group took only traditional instruction; experiment group took traditional instruction supported by teacher controlled computer assisted instruction. For both groups, Science subject test was applied as a pre-test before the instruction. It was seen a difference between the control and experiment groupsי average scores at Science subject test at a significant level.