As you can see the slime is not very strongly magnetic, but there's definitely a magnetic attraction force there. I was using a weaker refrigerator magnet. Had I one of the strong magnets from my lab at school it may have pick up the entire glob of slime. My kids had a blast with making slime and were thrilled to see it's magnetic properties. My 5 year old said it was her favorite type of slime yet!
The moral here is you should go out and buy a slime making kit! Your kids will love it!