Here are videos packed with interesting information about sleep. You could take notes while you watch them and use them as part of your Sleep Inquiry.
Dreams Explained Through Emoji with Bill Nye
Why do we need sleep? SciShow
Why do you need a good night’s sleep? Get Well Soon.
What happens when we sleep? Tell me WHY Education.
Why do we need sleep?
Cute animals tired and sleeping
8 Strange Animal Sleep Habits
The weirdest ways that animals sleep.