What is the history of the blackboard?
Oct 09, 2017 · What did Ben write on the board, and what does it mean? Mr. Ross writes “STRENGTH THROUGH DISCIPLINE” on the board, explaining that the secret to success is based upon discipline and hard work.
Is the blackboard still the best way to teach?
May 05, 2020 · Erasing Blackboard . Yesterday AIG reported that it has decided, at the end of March, to place Blackboard, AIG’s technology-driven subsidiary, into run-off. “As a result of this decision, AIG recognized a pre-tax loss of $210 million, primarily consisting of asset impairment charges; this charge did not impact adjusted pre-tax income.”
When was chalk first used on a blackboard?
Most people use mere chalk pieces to write on a blackboard. If the chalk pieces are getting broken often, then either the chalk pieces are of not so good quality or the way you hold the chalk piece is not right. Chalk pieces are made up of ionic salt which is light and easily breakable and that is why we use it for writing on a rough surface.
What is a blackboard made of?
Oct 15, 2014 · Although the term blackboard did not appear until 1815, the use of these cobbled-together slates spread quickly; by 1809, every public school in Philadelphia was using them.Teachers now had a ...
Who invented the blackboard?
James Pillans, headmaster and geography teacher at the Old High School in Edinburgh, Scotland, is credited with inventing the first modern blackboard when he hung a large piece of slate on the classroom wall. In America, the first use of a wall-mounted blackboard occurred at West Point in the classroom of instructor George Baron.
Why do schools use dry erase boards?
Although chalkboards are still common in schools, especially in older schools, newer schools today tend to use the dry-erase board for its ease of use and because it eliminates chalk dust contamination in the classroom and avoids the need to have students clean erasers, a common chore in earlier days. Some critics, however, argue that the slickness ...
What is the most revolutionary tool ever invented?
Few people realize that the classroom blackboard is one of the most revolutionary educational tools ever invented. And it may be hard to hard to fathom that blackboards as we know them today were unknown until relatively recent times. The invention of the blackboard had an enormous impact on classroom efficiency.
What was the modern revolution?
At the end of the 18th century, students in Europe and America were still using individual slates made of actual slate or pieces of wood coated with paint and grit and framed with wood. Paper and ink were expensive but slate and wood were plentiful and cheap, making them the economical option.
What is a blackboard in education?
Teachers now had a flexible and versatile visual aid, a device that was both textbook and blank page, as well as a laboratory, and most importantly, a point of focus. The blackboard illustrates and is illustrated. Students no longer simply listened to the teacher; they had reason to look up from their desks.
What is a blackboard?
The blackboard is a recent innovation. Erasable slates, a cheap but durable substitute for costly paper and ink, had been in use for centuries. Students could practice reading and writing and math on their slates, in the classroom or at home.
What is chalk made of?
The chalk with which we write on boards isn’t actual chalk but gypsum, the dihydrate form of calcium sulfate. Gypsum is found naturally and can be used straight out of the ground in big chunks, but it can also be pulverized, colored, and then compressed into cylinders.
Overview
Etymology and history
The writing slate was in use in Indian schools as mentioned in Alberuni's Indica (Tarikh Al-Hind), written in the early 11th century:
They use black tablets for the children in the schools, and write upon them along the long side, not the broadside, writing with a white material from the left to the right.
The first classroom uses of large blackboards are difficult to date, but they were used for music …
Design
A blackboard can simply be a board painted with a dark matte paint (usually black, occasionally dark green). Matte black plastic sign material (known as closed-cell PVC foamboard) is also used to create custom chalkboard art. Blackboards on an A-frame are used by restaurants and bars to advertise daily specials.
Chalk sticks
Sticks of processed "chalk" are produced especially for use with blackboards in white and also in various colours. White chalk sticks are made mainly from calcium carbonate derived from mineral chalk rock or limestone, while coloured or pastel chalks are made from calcium sulphate in its dihydrate form, CaSO4·2H2O, derived from gypsum. Chalk sticks containing calcium carbonatetypically …
Advantages and disadvantages
As compared to whiteboards, blackboards still have a variety of advantages:
• Chalk requires no special care; whiteboard markers must be capped or else they will dry out.
• Chalk is an order of magnitude cheaper than whiteboard markers for a comparable amount of writing.
Gallery
• Magnetic blackboard used for play and learning at the children's museum, Kitchener, Canada, 2011
• Teacher explaining the decimal system of weights using a blackboard, Guinea-Bissau, 1974
• Man writing on a blackboard in Guinea-Bissau in the open air, 1974
See also
• Blackboard Jungle
• Chalkboard gag from The Simpsons
• Chalkzone
• Conic Sections Rebellion, an 1830 student uprising when Yale students were required to draw their own diagrams on the blackboard
Further reading
• Aldrich Kidwell, Peggy; Ackerberg-Hastings, Amy; Lindsay Roberts, David (2008). "The Blackboard: An Indispensable Necessity". Tools of American Mathematics Teaching, 1800–2000. Johns Hopkins University Press. pp. 21–34. ISBN 978-0-8018-8814-4 – via Google Books.
• Ansell, Ben W. (2010). From the Ballot to the Blackboard: The Redistributive Political Economy of Education. New York City: Cambridge University Press. ISBN 9781107616998. OCLC 876849496.
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