Social Studies is a core subject offered in the junior secondary schools and tertiary institutions in the education system. And its aims cannot be achieved without the use of instructional materials, owing to the challenge of using instructional materials, which need to be tackled for the achievement of the aims. Therefore, this research work is designed to assess the problems of using instructional materials in the teaching of Social studies in junior secondary schools, in Dunukofia Local Government Area of Anambra State. Findings obtained from the analysis of the data collected; show that the problems of using instructional materials are the shortage of materials, laziness amongst the teachers, lack of fund for the purchase of instructional materials, and time. It was also observed that the performance of the student has a lot to do with the use of instructional materials during classes. Recommendations were based on the findings. And if this is well implemented, it will go a long way in solving the said problems of using instructional materials in the teaching of social studies for the growth and achievement of the objectives of the subject and the development of the country at large.