Several free options are available for PC users who need to create recordings of presentations to submit to a course. 

Two simple and reasonably easy-to-use apps are SnagIt and Screencast-o-Matic. Each offers options for recording screencast, webcam, and audio. 


SnagIt Home Page:


Screecast-o-Matic Home Page

VoiceThread is another free tool that is more of a presentation-style option. It is not a screen recording tool, but it is a tool that allows you to build and record a presentation within it, using slides you've created that you can navigate through. 


VoiceThread Home Page:

Additionally, there is a Chrome browser extension called Screencastify that can record anything within the browser, such as a Google Slides presentation or a Prezi. 


Screencastify (you must be using the Chrome Browser to install and use this tool):