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If I teach you then you should probably use my school e-mail address. You can find it on the school e-mail system.
Please make sure that you include a sensible subject line for your e-mail to help me work out what you're writing to me about. If your e-mail address isn't going to tell me who you are then you might want to include your name as well.
Please don't ask me to do your work/make your chart for you. I'll help you if there's something not working. I'll offer some advice. But if I do your work for you and you try to pass it off as your own, then that's plagiarism – which is a pretty serious deal. Amongst other things I could lose my job over it. So be clever and ask when there's a problem but expect to have to do the work yourself!