I specialize in tutoring Russian. I am getting Master's of Philology. I have many Russian and English grammar books and exercises. Traditional forms of teaching as I describe you a lesson, grammar rules, show examples is likely for me. But also I use audio, pdf files - all that will be exercises of homework or helpful informational materials. On our lessons we also read fragments from Russian literature and not only discuss but see what grammar forms are in sentences and together common rules. As an interactive material I suppose videos.