The Telegraph has a 90 second description of Daylight Saving Time. The video does not have any narration so it can be viewed without noise.

TED-Ed has two lessons that arent particularly about Daylight Saving Time however are related to the topic. The History of Keeping Time explains sundials, hourglasses, and the advancement of timezones.

Daylight Saving Time ends today for a number of my friends in Europe and it ends next Sunday for those of us 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 ideally, my kids will take benefit of the “extra” hour of time for sleeping next Saturday night.

Like I do practically whenever Daylight Saving Time ends or begins, I have actually gathered together a handful of brief video explanations about why we have Daylight Saving Time. See and take a look if there is one that can assist you explain Daylight Saving Time to your students..
National Geographic has actually 2 videos titled Daylight Saving Time 101. The first one, published in 2015, is a bit more upbeat than the second one that was released in 2019. Both variations are embedded below..

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