This document discusses using the Screencast-O-Matic app for teachers of grades 4-8. It defines screencasting as screen recording software used to illustrate and share something happening on your screen. Instructions are provided for using Screencast-O-Matic, such as selecting start recording, running the app, and hiding the app box. Example student projects are outlined where teachers can have students create screencasts, such as explaining how to use a spreadsheet to graph data or demonstrating the stages of mitosis.