What's this?
It's a backpack / bag
What's this?
It's a pen
What's this?
Those are books.
What's this?
It's a pair of scissors
What's this?
It's an eraser / a rubber
What's this?
It's a pencil
What's this?
Those are notebooks / copybooks
What's this?
Those are glue sticks
What's this?
It's a ruler
What's this?
It's a pencilcase