A slate is a thin piece of hard flat material, historically slate stone, which is used as a medium for writing.

Composition

The writing slate consisted of a piece of slate, typically either 4x6 inches or 7x10 inches, encased in a wooden frame. A slate pencil was used to write on the slate board. It was made from a softer and lighter coloured stone such as shale or chalk. Usually, a piece of cloth or slate sponge was used to clean it and this was sometimes attached with a string to the bottom of the writing slate.

History

The exact origins of the writing slate remain unclear. References to its use can be found in the fourteenth century and evidence suggests that it was used in the sixteenth and seventeenth centuries. The central time period for the writing slate, however, "appears to begin in the later eighteenth century, when developments in sea and

land transport Land transport is the transport or movement of people, animals or goods from one location to another location on land. The two main forms of land transport can be considered to be rail transport and road transport. Systems Several systems of land ...

permitted the gradual expansion of slate quarrying in

Wales Wales ( cy, Cymru ) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in ...

and the growth of a substantial slate workshop industry." By the nineteenth century, writing slates were used around the world in nearly every school and were a central part of the

slate industry The slate industry is the industry related to the extraction and processing of slate. Slate is either quarried from a ''slate quarry'' or reached by tunneling in a ''slate mine''. Common uses for slate include as a roofing material, a flooring m ...

. At the dawn of the twentieth century, writing slates were the primary tool in the classroom for students. In the 1930s (or later) writing slates began to be replaced by more modern methods. However, writing slates did not become obsolete. They are still made in the twenty-first century, though in small quantities. The writing slate was sometimes used by industry workers to track goods and by sailors to calculate their

geographical location In geography, location or place are used to denote a region (point, line, or area) on Earth's surface or elsewhere. The term ''location'' generally implies a higher degree of certainty than ''place'', the latter often indicating an entity with an ...

at sea. Sometimes multiple pieces of slate were bound together into a "book" and horizontal lines were etched onto the slate surface as a guide for neat handwriting.Peter Davies, "Writing Slates and Schooling", Australasian Historical Archaeology, Vol. 23 (2005), 63-64.

References

External links

* * *{{Cite book , title=Standard Sizes of Blackboard Slate , publisher=U.S. Department of Commerce, National Bureau of Standards , year=1966 Writing media Slate Educational devices

Composition

History

See also

References

External links