129809646998961250_8Origin introduced h n ē IB ǎ Blackboard Blackboard Blackboard style in the text before the invention, charcoal paint was discovered, some ancient caves in Europe can be found in some of the ancient frescoes, painted these murals from the traditional sense can be called a blackboard on a cliff. Ancient Chinese teaching of a is called a sand tableProducts, hardwood repeatedly written on the sand, but due to the sandy soil of soft, it and cannot be considered as a blackboard. The middle ages, made of lime and water mixed block has been found, using methods similar to the charcoal in the dark and hard surfaces of writing, by the 19th century, people with black coat on wood surfaces, to protect wood from erosion, of course, then the main BlackboardNot be teaching until the 19th century middle school popularity around the world. More than 200 years, from the earliest use of black paint smear on the Blackboard Board, cement and other hard surfaces, to 90 levigation glass, now colored steel, composite plate .... Witness step by step development of the educational institutions of the world, for the dissemination of knowledge of mankind, universal education, standingFollowing service in battle. Now, the Board also began to change the type of the complex and diverse
TERA Gold, from the blackboard on the color, green, white .... Flat panel off of the surface shape, arc Panel, from the structure supports activities on board, sliding panels, lift plate, magnetic Board, from teaching on the Blackboard, Office whiteboard, advertising Board, display board ... Teaching BoardBlackboard, all-composite slabs, combine sliding blackboards, interactive whiteboard, projection screen, and so on. various features of Blackboard features a variety of teaching: Green plate surface is dark green, with chalk to write, not to stimulate people's eyes will help eyesight protection; Whiteboard surface is white, with a variety of water-based crayon to write. Colored steel plate coated with wear-resistant coatings of high qualityAlloy steel plate, plate thickness 0.3mm-0.4mm, wear-resistant, do not fall off, colorfast, durable. writing the feel good, clear, easy to write, easy to dress down. dust and little new materials are imported from high molecular alloy particles and epoxy resin with a one-time pressing of the Blackboard does not do any processing on the surface, plate thickness of 3mm
SWTOR Credits, written, writing clearTaiwan permanent does not slip, no reflection, no residue after wiping, the Visual effect is very good, tested the service life of more than 15 years, this product was developed by blue best of exclusive development. Flat plate surface is flat and smooth, arc Panel Board to the surface, prevents reflective, sitting in the corner of the students can see the Blackboard writings, apply to larger classrooms. Blackboard support activities with a variety ofSupport, easy to move, wide. Pull push lifting plate, along specific tracks more mobile, easy to write, to watch. Magnetic Blackboard Blackboard lined stripe magnetic bar inside, or in the magnetic particles on the surface. Available when using magnetic nail, fixed small teaching tools such as magnetic or picture display. Multi-functional combination plate, interactive whiteboard, projection screen Board, staffMusic Board, is the traditional meaning of the combination of modern technology and the Blackboard, the traditional Blackboard, equipped with electronic whiteboards
SWTOR Power Leveling, projectors, computers, and the corresponding teaching software, hardware perfectly complementing the traditional teaching on the defects, modern teaching technology really came into the classroom, the inevitable trend for today's education. Glass Blackboard: use made of frosted glass, because of its brittle, powderLarge quantity of dust, the inconvenience has started to fade out the market for transport. Staff music staff Blackboard Blackboard: Blackboard application in music, as its name suggests, the kind of music Blackboard Blackboard is becoming, the Blackboard is handled by technical personnel of the Soviet Union developed a singing Blackboard. draw notes on the Blackboard. When music teachers to use pointer touch to the music symbols, Blackboard will be sentConsistent with these notes sound. wrote a piece of music on the Board, when the pointer when you touch the music notes, music Board will play a beautiful song. Glass Blackboard Blackboard Blackboard Blackboard Blackboard staff music are based on fixed or mobile as carrier of the Blackboard, chalk writing or poster paint to make universal propaganda position of painting tools, easyBenefits of scrubbing, modified, replaced, is one of the most economical and the most convenient and the most common form of publicity, wide pan of the Blackboard used in primary and secondary schools, the army, tertiary institutions and industrial enterprises. Blackboard must have regard to, at least five pages, illustrations must have.
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