A playground

Playground

A playground or play area is a place with a specific design for children be able to play there. It may be indoors but is typically outdoors...

 roundabout (or merry-go-round) is a flat disk about 3 metres in diameter that can be made to spin by pushing on its handles. The children who spin it can jump on, and experience a dizzying ride. "Roundabout" is also often a synonym for carousel

Carousel

A carousel , or merry-go-round, is an amusement ride consisting of a rotating circular platform with seats for riders...

.

The playground roundabout is a simplified version of a fairground carousel.

The roundabout uses rotary motion, which means it spins around in a circle either clockwise or anti-clockwise.

Innovation

An innovator found by the BBC

BBC

The British Broadcasting Corporation is a British public service broadcaster. Its headquarters is at Broadcasting House in the City of Westminster, London. It is the largest broadcaster in the world, with about 23,000 staff...

 has connected the roundabout to a pump, so that water is raised while the children play. This device is known as the Roundabout PlayPump

Roundabout PlayPump

The PlayPump Water System uses the energy of children at play to operate a water pump. It is manufactured by the South African company Roundabout Outdoor...

. There are about 600 PlayPumps in South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

, providing clean drinking water to about one million impoverished people.