The education area is developing constantly, with innovative approaches to instruction emerging all the time. Digital technology, programs, software and all kinds of applications are used on a daily basis not only in informatics instruction, but also in humanities subjects such as history, foreign language, etc. Since working with modern technology comes naturally for today's students, they find instruction which uses interactive elements more attractive as it is more active, dynamic and visual. The paper is aimed at interactive study materials which could be used in upper primary school mathematics instruction. The created interactive study materials should make instruction more effective and encourage students to be more active in class. Our proposals are based on the 7th grade curriculum. The created materials will be based on the key didactic principles, curriculum and teachers' ideas and requirements. Moreover, the created materials will be implemented into instruction. Afterward, the materials will be evaluated by both teachers and students through a questionnaire survey.