Özet:

Computers are useful in the field of teaching-learning process of science education as they are in every other field. The purpose of this study is to investigate the effects of a computer-assisted instruction material on understanding of photosynthesis subject. This study was implemented with the same teacher two different classes with 53 students in a lycee in the central of Trabzon in Turkey. While in one class (the control group) traditional instruction was followed, in the other class (the experimental group) the computer-assisted instruction material was followed. The Photosynthesis Achievement Test and Biology Attitude Scale were given to the two groups as a pre-test and post-test. The result showed that the computer-assisted instruction group increased their success about photosynthesis when compared with the traditionally designed science instruction group. Besides, when compared with the control group, there appeared an significantly positive difference in experiment group students in their attitudes toward science as a school subject.

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