A piece of paper or paper sheet with a straight line on it.

Paper With Line

The back of an open book with a round label on the cover.

Open Book Facing Back

An opened textbook with lines and boxes with a red cross mark.

A closed book with a ribbon bookmark sticking out from its bottom.

An open book with four parallel lines of text on each page, facing front.

A girl with long hair wearing a sweater and a skirt, holding a notebook, and facing front while standing.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.