Increasing availability of digital devices in elementary school classrooms presents exciting new opportunities for teachers to support the teaching and learning of mathematics. Although many of the math applications available for these devices focus on drill and practice of mathematical procedures, screencasting apps can help support effective teaching practices that promote problem solving and deeper learning of elementary mathematics. To support and facilitate student learning of meaningful mathematics, "Principles to Actions: Ensuring Mathematical Success for All" (NCTM 2014) articulates a research-informed framework of effective teaching and learning practices, guided by six principles. In this article, the authors explore three vignettes of practice that highlight affordances of screencasting applications in alignment with the NCTM Tools and Technology Principle. The three vignettes specifically relate to the following three Effective Teaching and Learning Practices: (1) Facilitate meaningful mathematical discourse; (2) Use and connect mathematical representations; and (3) Elicit and use evidence of student thinking.