Our class had been practicing for an upcoming play.(They aren't practicing at the moment because they're studying Math). Our Math teacher was teaching us, when the teacher who was in charge of the play showed up. She said:
Can I take a few minutes of your (math) class? These kids have to practice for their upcoming play.
By "class" I don't mean the group of students in the classroom at the moment" but I mean "Math class".
Is the use of "take a few minutes of your class" natural? If not, then what will be a natural way to express it?