We are making a trebuchet on Google Sketch up, but we are having some difficulties. We are not yet used to the technology, and taking a lot of time. Sharon started over and over, and she can't install Google Sketch up at home so we probably have to think of something. We are finished the orthographic one though. We aren't really sure if the materials that are provided meet our requirements, so we probably have to think about some back up plan too.