Question about financial aid in UCB

[dongshang]

Hello everyone, I just got a offer last day.It was MA in Chinese Studies in University of Colorado at Boulder. Now I have some question about it.They told me"The funding we offer will take the following form: a 35% appointment as a Teaching Assistant. It requires fourteen work hours per week, includes a tuition waiver for up to 7 credits, pays for various fees to the university, and leaves you a stipend of a little over $ 1,300 per month (we expect a slight raise compared with last year's annual salary of $12,536.74). And as far as I know, I need to "present at least 30 hours of approved coursework or, in exceptional cases, 24 hours of coursework plus a thesis" to graduate. In this case,does this mean I need to pay for extra credits? If so,how much would it be?

Sorry to bother you guys with such silly question, thanks for your generous help.