Taken from a mine and then locked up in a wooden case. Never released but used by students everyday. What am I?
I am a word. I become longer when the third letter is removed. What am I?
I only exist when you are here. Where you never were I can never be. What am I?
I am the only thing that place today before yesterday. What am I?
My first half means container. Not a lot of people understand my language. What am I?
What force and strength cannot get through, I with my unique teeth can do. What am I?
The more you cut me, the bigger I grow. What am I?
I don’t have eyes, but once I did see. Once I had thoughts, but now I’m white and empty. What am I?