The purpose of this research is to investigate the effects of computer-based instructional materials used in social study courses of sixth grade attention levels via an electroencephalography device. In this study, a time series design was employed. The study group was composed 21 volunteer students who were allowed sixth grade in a public secondary school located in the Central District of Usak province during the 2013-2014 academic year. NeuroSky's MindWave - EEG device was used as data collection tool in the study. "PYTHON" and "MATLAB" programs were used for the analysis of the obtained data. As a result of the research, prezi presentation, digital graphics, digital map, documentary and animation were found to increase the attention level of the students. Apart from the purpose of the research, the levels of attention dropped when the questions were asked students. According to the printed maps, digital maps increase students' attention and the hand movements of the teacher in the class is also effective in the attention levels of the students.