Bettendorf Elementary/Middle School Engineering Contest

I am currently working on an engineering contest for my 4th and 5th grade gifted students. We will be building contraptions that we plan on linking all together to create one massive contraption. We are in the process right now of expanding this to have my students contraptions trigger off another classroom contraptions and possibly one more classroom via a cell phone or similar device. This will require online collaboration and feedback among students and teams. If interested please contact me at aarmau@gmail.com