Subject Name + 课
课 (kè) is a noun meaning 'class,' 'lesson,' or 'course.' It can refer to a specific subject class (e.g., 语文课 'Chinese class') or to classes in general. It often appears after a subject name to indicate a particular course.
今天的数学课特别有意思。
Jīntiān de shùxué kè tèbié yǒu yìsi.
Today's math class was especially interesting.
你最喜欢什么课?
Nǐ zuì xǐhuān shénme kè?
What's your favorite class?
下午有两节语文课。
Xiàwǔ yǒu liǎng jié yǔwén kè.
There are two Chinese language classes in the afternoon.