To show and then play a movie, click on the arrow or the movie title/description. Repeat to hide it.

UM L5 Movie 1: Rubbing a nail so one end is a particular pole

UM L5 Movie 2: Magnetizing a nail without touching it

UM L5 Movie 3: Magnet interacting with a paper clip

UM L5 Movie 4: Effects of heating a magentized object