No worries @7s7s. I'm actually new to all this as well so I apologize in advance about not being able to answer your questions with full certainty.
I believe we are to fulfill 5 total credits in order to graduate, with each course normally being valued at 0.5 credit(s).
In first year (of 2) we need to complete 3 total credits to be eligible for both co-op terms. For example, in the upcoming fall semester, 2 courses will be 0.25 credits each but they are both half a semester in length and will take place successively (duration of half a semester for each).
This is directly from the Program's website:
"Co-op eligibility:
Students will be eligible for a first co-op work term during the summer term of their first year in the MA program. In order to participate in a first co-op work term, students must successfully complete the following 1.5 course credits in the fall term of their first year in program:
INAF 5017 (0.25 credits) (required course)
INAF 5018 (0.25 credits) (required course)
INAF 5016 (0.5 credits) (required course)
INAF course of student’s choosing (0.5 credits)
Total of 1.5 credits
Students will be eligible for a second co-op work term if they successfully complete a total of 3.0 credits (including their fall term courses), prior to starting the second co-op work term. In order to participate in a second co-op work term, students must successfully complete the following 1.5 course credits in the winter term of their first year in program:
INAF economics course required for your field (0.5 credits) (required course)
INAF courses of student’s choosing (1.0 credits)
Total of 1.5 credits
The 3.0 credits must include successful completion of all required courses, and the successful completion of the required INAF economics course for their field."
Hope that helps.