How can I creat an invention using simple machines to make a mark on a piece of paper? - Jason Shultz (age 17)) Altoona, PA
A:
Jason -
The thing about inventions is that you're supposed to come up with
them out of your own creativity. I would suggest that you learn as much
as you can about different kinds of simple machines, then let your
imagination run wild! Here are a couple of sites with good descriptions
and pictures of the different kinds of simple machines:
