Woman's legs resting on soft seat.

Low angle view of skiers sitting on a ski lift

A woman tying hiking boots

Four human legs underwater in a swimming pool

A woman sitting in a library with a book, focus on midsection and low section

A mid adult woman sitting on a staircase using a laptop

A young couple sharing an intimate moment

University students socializing and studying on campus

University students studying and socializing on stairs on campus

A woman with four shopping bags sitting on a wall in Paris, France

Portrait of a son and father

University students studying on campus

The side of a womans head and shoulders and the legs of someone sitting in a chair

Low section view of a woman exiting from a car

Low section view of a man holding a tin can

A worried man with a book

Side view of a boy and girl doing homework on a desk in the garden

A cartoon bear at school

The Classroom Linda Braucht (20th C. American) Computer Graphics

Man explaining people using white board

Side view of a girl submitting answer sheet to the teacher

Man talking to mature man sitting at desk with computer, high angle view

Side view of a girl studying book

Painful knee, artwork

Low section view of students sitting at desks