The latest TED-Ed lesson and video is on “How rollercoasters affect your body.”
Here’s the video, along with additional roller coaster-related educational resources:
Here’s a link to the classic online Design a Roller Coaster activity from Annenberg.
The “The Physics of Roller Coasters” is a video from The Sci Show. It’s not a TED-Ed video, but there is a TED-Ed lesson on it:
Lastly, here’s another TED-Ed video that might go along with the roller coaster theme: