First, straighten out the paperclip. Then rub the south end of the magnet down the lower half of the paperclip. Push hard. Repeat this about 50 to 75 times. Reverse the magnet and the paperclip, and rub the north end of the magnet down the upper half of the paperclip. Repeat this also about 50 to 75 times. You are pulling all the particles that make up the paperclip in the same direction. All their north poles will point in one direction, and all their south poles in the other. 
Now the straightened paperclip will be a magnet too.Try lifting some more paperclips. You can use a compass needle to decide which end of your paperclip magnet is north, and which is south, and mark the ends with paint. Do you think it's possible to cut this magnet in half, and make one magnet with just a north pole, and one with just a south pole? Let's find out. 
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