The last part of our Rube Goldberg is using cups and Popsicle sticks. From where I left off the last domino has a string attached to it which is also attached to a Popsicle stick. There are about 12 cups lined up on two sides which are parallel. We used the sticks and crossed them so they were touching. After the last domino was knocked down the Popsicle stick get’s pulled down and the rest of them fall too. Then the last Popsicle stick is at the end which is right at the edge of the staircase. My friend Leila who is one of my partners was testing out ideas and came up with that. The last part of the Rube Goldberg is there will be dominoes going down the stairs, but instead we are using books as dominoes so they are larger and we only needed to put one per step. Our goal is to get something to hit the on button of the radio to make a song come on. That is my Rube Goldberg.