Electrochemistry: Cathodes and Anodes; which is postive, which is negative!?!?

I've been struggling with this question for a week now. My teacher says that since cations go to the cathode, it must be the negative electrode. This doesn't make sense to me, though, since I always thought that electrons flow from negative to positive; at the anode, electrons are produced by oxidation, and they travel to the cathode, where electrons are used for reduction. Also, electrons are negatively charged; if they were to travel to the negative terminal, negative + negative -> repulsion.

HOWEVER, a lot of sources on the internet are saying this:
- In a galvanic cell (spontaneously producing current), the cathode is the positive electrode, while the anode is the negative electrode.
- In an electrolytic cell (requiring input of voltage), the cathode is the negative electrode, while the anode is the positive electrode.

Various other sources say that the cathode is always positive, and the anode is always negative. Others agree with my teacher in saying it's the other way around.

My English dictionary says that the cathode is the negative electrode.

One of the handouts, which was photocopied from a book, says Cathode (+) and Anode (-). This is for a galvanic cell.

Both my textbooks refuse to say anything; they only say Anode is the site of Oxidation, and Cathode is the site of Reduction. There is a diagram, however, that suggests that it depends on whether it's a galvanic or electrolytic cell.

Sooooooooooo, can anyone clear this up for me? I hope I don't have to move this to the debate forum. Thanks.

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That's pretty interesting (+/-) but I am sorry to inform you that homework threads are not allowed here so I have to go ahead and close this one Maybe you can CTRL+C/CTRL+V this in your chocojournal, though

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