Un o una? Crossword

You find these in a library
Pens and pencils are in here
To store items in
When you make a mistake using a pencil you need one of these
To make straight lines
To keep in contact with friends and family
To look up spellings
You need one of these in your maths lesson
When you pencils are blunt you need one of these
You write with one of these
To keep your change in
You write in these
To know what you are doing
Used in Art classes