UOI : Machine

I have done a small research about Hair Dryer as one of thousands compound machines. With the result of my simple rearch we can undersatnd how the Hair Dryer works. Please open my following website : http://desireevandarina.googlepages.com/desireeschoolstuff

I have also made an explanation about Screw as one of the Simple machine. I put my research about Screw in the following website : http://desireevandarina.googlepages.com/screw