?Can you serve me next to my homework?

Well, I have to make an experiment, but I have no hypothesis of what can I do, so please give me ideas of experiments, easy experiments..... And also interesting.....please....

Please share me the materials I need, and the process to make it...
Get a small container like a cup and fill it with water.
Place a piece of cork contained by it, cut in half so that it is flat.
Rub a needle on a magnet or on a silk piece of rug.
Place hypodermic on cork and the needle will always turn to North.
like for a science rational? you could get petri dishes and get samples of places surrounded by your school, like in the bathroom, on phones, door handle etc and see what bacteria grow on them.

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