How can I go about getting her number?

Anonymous
There's this girl in my class, I've been noticing her looking at me, turning around in class looking at me than turning away. Stuff like this I've been noticing. We've only talked one time and it was very brief. Anyway long story short, tomorrow we will both be at the hospital for about 10 hours for part of the class working with staff and learning. So I'm sure we won't go a whole 10 hours basically working with each other without talking. I want her number but I don't know how or when to ask without making it awkward or feel weird. Any idea?
How can I go about getting her number?
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