It is acknowledged that to improve the value of the learning process and outcomes in areas such as science, technology, engineering and math, the teaching quality needs to be enhanced. Therefore, it is crucial to have access to real teaching practices. The multimodal narrative (MN) tool allows teaching practices to become public, sharable, and usable (open science perspective), preserving their holistic, complex, and ecological nature. This tool has characteristics and a structure that enable an in-depth study of teaching practices, in different contexts, with several purposes (e.g., teacher education, professional development, and research). This chapter presents MNs and the necessary steps involved in collecting multimodal data, structuring the narrative, and validating the document. MNs can be used by teachers and researchers, or other professionals, with multiple specific objectives, globally contributing to improving professional practices.