What is this?
This is a school.
What is this?
This is a classroom.
What is this?
This is a book.
What is this?
This is a pencil.
What is this?
This is a desk.
Who is this?
This is a teacher.
Who is this?
This is a pupil/student.
What is this?
This is a bag.
What is this?
This is a notebook.