The resume feature on the PBS site and apps easily allows you to return to a video and continue watching from where you last left off.
Open the PBS app on Amazon Fire. On the left side of the app, select My List.
Under My List, you will see rows for your saved videos, shows, and Viewing History.
Scroll down to Viewing History and select one of your recently viewed videos.
You will then see the video's page where you have an option to Resume watching the video, or to Play from beginning. Select Resume and the video will begin to play from your last saved point in the video.
Note: Your Viewing History will only include videos that have been viewed for at least five minutes.