The last time our Rube Goldberg group met we wanted to make sure our course worked. We did it over and over until we were satisfied. We made adjustments to the car and the dominoes after the marble track. Now we know that our Rube Goldberg works. We also added a few ideas. For example, we put a domino on it’s side so the marble will bounce off it and hit dominoes. Also, we changed the car so that it will hit the marble every time. This idea took a lot of tape, but it worked.