Like I do practically each time Daylight Saving Time starts or ends, I have collected together a handful of brief video descriptions about why we have Daylight Saving Time. Take a look and see if there is one that can help you explain Daylight Saving Time to your students..
National Geographic has actually two videos titled Daylight Saving Time 101. The very first one, released in 2015, is a bit more upbeat than the second one that was published in 2019. Both versions are embedded below..

The Telegraph has a 90 2nd description of Daylight Saving Time. The video does not have any narration so it can be seen without sound.

If it isnt as succinct as the videos above, CGP Greys video explanation of Daylight Saving Time is still a great one even.

Daytime Saving Time ends today for many of my buddies in Europe and it ends next Sunday for those of us in North American states and provinces that observe Daylight Saving Time. As somebody who gets up early and resides in a northern state, I invite the modification as Ill see the sun an hour previously. And ideally, my kids will make the most of the “additional” hour of time for sleeping next Saturday night.

TED-Ed has two lessons that arent particularly about Daylight Saving Time but are associated to the topic. The History of Keeping Time discusses sundials, hourglasses, and the development of timezones.