제1과
Can someone explain me this term?

What 제 means?

What 과 means in this term 'cause I know that it usually means 'and'?

Are numbers between 제 and 과 always pronounced as Sino-Korean numbers and why?

Question

제1과
Can someone explain me this term?

What 제 means?

What 과 means in this term 'cause I know that it usually means 'and'?

Are numbers between  제 and 과 always pronounced as Sino-Korean numbers and why?

Answer

In the expression "제1과" or "제일과" the word 제(第, 차례 제) refers to "the order (in the content)", and the word 과(課, 공부할 과/절차 과) refers to "a chapter or process/section".

So "제일과(第一課)" means "the chapter/section one" or "the first section",

Answer

ㄴ Yes. Isabella. In formal language, 제 means 'mine' or 'my'. 
ex) 그 책은 제 것입니다.

but In this situation, as 'littlething' said '제 means 'the order'.
ex) 제1과, 제1장…

Answer

I think that 제 means 'mine' or 'my' in formal language, and 과 is a book or a chapter.