Audio-Visual aids are those aids, which assist the teaching process, by which teaching and learning both process become attractive, interesting and sophisticated. It solves the teaching problems which occur during teaching. This experimental study is designed to investigate the role of A.V aids on the cognition of students at secondary level. The objective of this study was to find out the use of A.V aids in teaching of Pakistan studies at secondary level and to find out the effect of A.V aids on the cognition of students. The population of the study was comprised of all the Govt Girls secondary schools. For the present study Govt M.C. Girl's secondary school was selected through purposive sampling. Quasi-experimental research design was adopted for the study intact classes were taken in this experiment. The instruments of this study were an inventory of A.V. aids and also developed an achievement test. The test reliability was found 0.75. The experimental group was taught by using technical audio- visual aids while the control group was taught by the traditional method. The results of pre and post test scores were calculated and analyzed through statistical tools and percentage was used for analysis of inventory responses. The mean achievement scores of student from experimental group was significantly higher than the control group It was therefore recommended that Pakistan studies teachers should use the audio-visual-aids to teach to teach students at 9th class. The findings of the study will provide useful knowledge for educators and teachers to improve their teaching methods. The results of this study might stimulate further research.