My eraser

I made a mistake
on my paper
I need an eraseras rubbery as a tire
Erasers are very helpful
as smooth as butterwe use them
to fix our mistakes
they are as white as paper
we use them everyday in class
and they will help us pass
they are as soft as cotton
and we can put them on our button
What will I do without an eraser
They are just as good as a pencil

Image: http://school.discoveryeducation.com/clipart/clip/erase.html