When does intermission occur?

Read the following passage from the play Our Town by Thornton Wilder:

George: Hello Emily!

Emily: [Shyley, turning from trellis] H'lo!

George: [Edging down center, socking mitt with baseball] You made a fine speech in class.

Emily: Well-- I was really ready to talk about the Monroe Doctrine, but at the last minute Miss Corcoran made me talk about the Louisiana Purchase instead. I worked an awful long time on both of them.

George: [Puts ball in back pocket, looks at own house, edges to the bench] Gee, it's funny Emily. From my window up there I can just see your head nights when you're doing your homework over in your room. [Both face front, shy throughout]

Which of these is a prop in this scene?

Which of these is an example of a stage direction?