1. Connect to this link: http://memory.loc.gov/ammem/bbhtml/bbhome.html.
2. Browse the collection of baseball cards from different eras and teams.
3. Imagine you are a baseball player from one of the periods shown. Design your own baseball card for a specific era. You can use a computer design progam or sketch by hand.
For information about the science behind baseball, go to http://www.exploratorium.edu/baseball/