What's the difference between blackboard and chalkboard?
Blackboard
Definition:
(n.) A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools.
Example Sentences:
(1) URL: Kenyan police again disputed this explanation, with the deputy inspector general, Grace Kaindi, claiming that writing on a blackboard found at a junction near Hindi with could implicate the Mombasa Republic Movement (MRC) , a group that campaigns for independence of the coastal region.
(2) In 1954 the BBFC banned the Marlon Brando biker flick The Wild One outright (it was eventually released here in 1968), while the following year Clare Booth Luce, as US ambassador to Italy, intervened to prevent The Blackboard Jungle being shown in competition at Venice.
(3) Le Petit Commerce (+33 5 56 79 76 58, no 22) has an exhaustive choice of seafood on its daily blackboard.
(4) The dominant theories of visual search assume that these modules form a "blackboard" architecture: a set of independent representations that communicate only through a central processor.
(5) Each group must record on the blackboard its answers to key questions before the problems are discussed.
(6) Maybe said: "Hello sir, is that a blackboard rubber or are you just pleased to see me?"
(7) Blackboard and task control modules allow specific knowledge-based modules to act on information available to the blackboard.
(8) Last week in the House of Commons a young Conservative backbencher, who until now would have been listed in the "thoroughly loyal" column on the Tory whips' office blackboard, was asked about talk of Boris Johnson being installed again as an MP so that, at the right moment, he could mount a coup and replace Cameron as leader and prime minister.
(9) The specificity and the use of diapositives, synchronized slide audiotype series, fragmental films, survey films, folding foils, natural models, drawings on the blackboard, and closed-circuit television are dealt with.
(10) We’ve brought large crates of stationery, whiteboards, blackboards, paper, exercise books, pens, pencils and calculators.
(11) A cartoon in South Africa's The Star newspaper showed Malema at a school desk, watching admiringly as Mugabe, in mortar board and gown, pointed to a blackboard and the chalked words: "How to destroy a country."
(12) In order to make students pay attention to content you have to suddenly bang on the desk with your fist or get up and write on the blackboard, and if you're lucky the chalk will squeak, and the people will wake up and pay attention.
(13) The techniques which scored best were giving the questionnaire before the lectures, giving handouts and using the blackboard.
(14) Eight environmental sounds, i.e., playing the harp, cuckoo's song, sound of the waves, cock's crow, noise of the subway, alarm of a clock, sound of a dentist's drill, scratching of the blackboard, and their temporally reverse sounds were presented for 20 sec to 16 college students in a sound-attenuated chamber.
(15) These events became performances in the same way that Joseph Beuys’ blackboard lectures would a century later.
(16) Double denim creates an effect that is the optical equivalent of nails scraping down a blackboard.
(17) The present system makes use of a blackboard architecture and multiple knowledge sources within an integrated model-based system.
(18) Thus this nucleus plays the role of an 'active blackboard' on which the current best reconstruction of some aspect of the world is always displayed.
(19) With the derestriction of broadcasting hours, those Zen-like moments of stillness on British TV – filled with Test Card F , the little girl with an Alice band playing noughts and crosses on a blackboard, or IBA engineering announcements "for the radio and television trade" – began to disappear, to be replaced eventually by an endless flow of programmes, stretching from dawn till daybreak.
(20) What American leaders and their intellectual lackeys seem incapable of understanding is that history cannot be swept clean like a blackboard, so that "we" might inscribe our own future there and impose our own forms of life for these lesser people to follow.