Axel, wheel, and screw

What I learned from the online activity. Two things that effected the wheel and axel were the radius of the wheel, and how far apart the threads are. The greatest the wheel and thread number is gives you the most Mechanical Advantage with the wheel and axel. I might have gotten the screw mixed up, for a screw to have the greatest MA, it must have the greatest number of threads. Side note: If you want a greater MA you want a machine with the highes number.