By Alan Haskvitz
http://www.reacheverychild.com/alan.html
Exploring inventions and simple machines provides opportunities for integrated lesson plans that motivate and stimulate creativity in students. I remind my class everything that does not occur naturally has been created by someone who saw a need and invented something to fill it. You can incorporate economics, science, language arts, math and technology into lessons.
I’ve compiled a few sites to provide students with background about inventions and inventors. The simple machine sites are numerous, and most cover the fundamentals well.
I have them listed here
http://www.reacheverychild.com/feature/inventions.html
Beginnings
Interactive sites
Inventors and inventions
Simple machines