Contents

Contents : A simple machines timeline -- Origins of simple machines -- introduction -- what is a machine -- it's simple -- putting machines to work -- it's not all fun and games -- the wheels on the bus -- ups and downs -- a slippery slope -- all screwed up -- putting it together -- world-changing machines -- power to the people -- would you want to live without simple machines? -- glossary -- index -- amazing simple machines -- five top uses for simple machines -- did you know? --