If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Main content
Unit 4: Gridiron engineering
About this unit
Engineering and design are especially important to the game of football. New technologies are used to help referees make a call, and new equipment is uniquely designed for players to stay safe (but still be fast and efficient). Engineering and design has even changed the way that fans experience the game.