Interactive learning environments provide a variety of instructional tools including educational graphics interchange format (GIF) and PowerPoint presentations which facilitate delivering stimulating and motivating lessons. This study examined the potentials of visual tools for grammatical development by administering GIFs as the educational intervention based on strategies suggested by the computer-assisted nonlinear dynamic approach. A mixed methods research was used to concurrently triangulate different strands of data on the effects of educational GIFs on grammatical proficiency development among randomly sampled adolescent and adult participants. The interpretations were made based on methodological triangulation of QUAN + QUAL data and running one-way analysis of variance. Pedagogically, the findings confirm the efficacy of animated educational GIFs for enhancing second language learners' grammatical development in mastering progressive tenses (present, past, and future).