Four young college students sitting on the stairs and looking away, Studying, Education

Four people sitting on stairs and discussing, Studying, Education

Two couples walking in town

Executives walking downstairs

Students in a class, with a girl raising her hand

A teacher writing on the chalkboard, while students look on

A teacher talking to her students and pointing at the earth

Illustration of school children seated in a row in front of a chalkboard

Students playing various band instruments

Teacher and students in computer class, high angle view

Three businessmen stepping on stairs

climbing up alphabet stairs

Four variations of the aortic arch are shown: double aortic arch of the frog; right aortic arch of the bird; left aortic arch of the mammal, including man, and a variant with the subclavian artery originating from the descending aorta.

Outline of a man holding three small people

Two part illustration comparing the dangers of two ways of walking down stairs. Top image illustrates how, by walking down face forward, there is danger of falling a greater distance than one would fall if walking down backwards as seen in the lower im

Children giving flowers to mother on Mother's Day, Painting, Illustration, Illustrative Technique, Front View, Side View

Four students descending stairs