Children are experiencing life at a time of rapid technological development. They increasingly utilize new technologies, navigate, and create multimodal forms of communication. Information and communication technologies (ICTs) evolve, reshaping the nature of literacy. Meanwhile, state, federal, and professional organizations are rewriting the definition of literacy to include multimodal literacies. Yet, pedagogy has not kept pace. This exploratory case study sought to answer the question: What are the effects of using multimodal writing practices in an elementary writer's workshop framework? As writing is a social practice and communication becomes increasingly multimodal, this study was conducted from the viewpoint of sociocultural theory, which holds that writing is a social experience. This study was also underpinned by two additional theories, multiliteracies, which incorporates multimodality and design into the sociocultural aspects of writing, and that of New Literacies, which posits new social practices are needed due to changing ICTs. Nineteen fifth-grade students from a classroom in a Midwestern suburb participated in the study. Following analysis of six classroom observations, student interviews, a student focus group, and a teacher interview, five themes emerged. Results indicate that using multimodal literacies: (a) fosters high levels of engagement, (b) enhances meaning-making, (c) fosters opportunities for collaboration, (d) provides opportunities for publishing of professional-looking books for an authentic audience, and (e) fosters writing skills and writer identity. These results suggest pedagogical practices need to shift if students are to gain the 21st-century skills necessary to draw upon their social, cultural, and technological knowledge to design and create new, innovative communication across multiple modes or media. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]