Here is the poster describing my project
Transcription: Hi. My name's Tallulah and for my project I chose to make a model rollercoaster. I chose to do my project because when I was a child at Six Flags or Disneyland I was always too short to ride the rides, so I decided to make a miniature version so that the tiny people can finally ride the rides that they were left out on. So how it works is I used an Arduino for the launching mechanism and it's basically just a servo motor with an arm that covers a big stick with a spring on the end so that when the arm goes up it will hit the cart and make it go all the way around. And then I have a conveyor belt that's attached to a motor that makes it come up and then lets it go all the way down. So yeah, that's it. Thank you!