Screen-casting is the process of recording yourself interacting with content on your computer screen, and then posting that recording online for your students to view. There are many options for screen-casting. We recommend Zoom, which allows you to record your screen ahead of time and share the results with your students. You can also use Zoom for Synchronous scenarios.
Here is a basic step-by-step guide with screenshots on how to do this.
Zoom Settings: This file shows all possible Zoom settings.