Who's this?
This is my friend.
What's this?
This is a guitar.
What's this?
This is a sandbox.
What's this?
This is a swing.
What's this?
This is a piano.
Who's this?
This is a teacher.
What's this?
This is a music room.
What's this?
This is a classroom.
What's this?
This is a playground.
What's this?
This is a school bus.
What's this?
This is a seesaw.