Screencastify is a great tool for recording your screen, just you or you and your screen.
Adding audio to Google Slides just got easier! This video will show you how to use Screencastify to create your audio, export it and insert it into a Google Slides Presentation.
(You can use any audio creation tool.)
Once you have recorded your video in Screencastify, you can now send that video directly to Edpuzzle, Wakelet or Remind.