Rolling the clocks back one hour is a sure sign that winter is fast approaching North America. We’ll be doing that here this weekend. If your state or province practices Daylight Saving Time, you’ll be rolling back your clocks before bed and gaining back that hour of sleep you lost in the spring. Students may be wondering about the reasons for Daylight Saving Time. The following videos offer concise explanations of Daylight Saving Time.

And although it’s not about daylight saving time, this TED-Ed lesson about the standardization of timezones is worth watching.