Lego Robotics

Today we did Lego robotics and had to program a robot to push two rocks to push them into a circle. We ended up only having time to make it push one into a circle and the other off to the side. Its seemed like kind of a two person task, but we still tried to included everything. One of the wheels on he robot kept popping out until we figured how to keep in in place. I wonder how much more time we would have needed to finish the program.