Explaining functional programming to object-oriented programmers and less technical people

Question

What are some good examples that I can use to explain functional programming?

The audience would be people with little programming experience, or people who only have ob

Answer 1

Compare it to sentence structure.

I hit the ball, catch the ball, throw the ball:
Procedural
Hit(ball)
Catch(ball)
Throw(ball)

OO
Ball.Hit()
Ball.Catch()
Ball.Throw()