TED-Ed has two lessons that arent particularly about Daylight Saving Time but are related to the topic. The History of Keeping Time explains sundials, hourglasses, and the advancement of timezones. Second, How Did Trains Standardize Time in the United States? describes the role of railways in the advancement of the timezones utilized in the United States (and many of Canada) today.

CGP Greys video description of Daylight Saving Time is still a good one even if it isnt as succinct as the videos above.

Like I do practically every time Daylight Saving Time begins or ends, I have actually congregated a handful of brief video explanations about why we have Daylight Saving Time. Take a look and see if there is one that can assist you explain Daylight Saving Time to your students..
National Geographic has actually 2 videos entitled Daylight Saving Time 101. The very first one, published in 2015, is a bit more upbeat than the 2nd one that was published in 2019. Both versions are ingrained below..

Daylight Saving Time ends today for much of my buddies in Europe and it ends next Sunday for those people in North American states and provinces that observe Daylight Saving Time. As someone who gets up early and resides in a northern state, I welcome the modification as Ill see the sun an hour earlier. And hopefully, my kids will benefit from the “additional” hour of time for sleeping next Saturday night.

The Telegraph has a 90 second explanation of Daylight Saving Time. The video does not have any narrative so it can be seen without sound.