What did you learn from the experiment?
This is how you make a nail into a Electromagnet, you need some wire, and a battery and take the nail and the wire and coil ( about 23 times.) The wire around the nail and then take some tape. Tape the wire on the two sides of the battery. Then the nail would pick up 5 paper clips that is how you make a nail into a Electromagnet.

How does what you learned apply to a pinball machine?
When the ball goes up the Electromagnet gets the ball from going anymore and the game over for that person.
Or when the ball goes in the hole then the Electromagnet sucks the ball up then a new ball goes by the launcher to do it again.