How many meters long and wide is the blackboard in the classroom

A common blackboard is about 3 meters long and 1 meter wide.

Of course, there are different specifications at different stages of the blackboard should be designed in accordance with the following provisions. Blackboard size: height should not be less than 1000mm. width: elementary school should not be less than 3600mm, secondary school should not be less than 4000mm.

The vertical distance between the lower edge of the blackboard and the surface of the podium: elementary school should be 800-900mm; secondary school should be 1000-1100mm.

Additionally, the surface of the blackboard should be made of wear-resistant and glossy. should be made of wear-resistant and non-glossy material. The horizontal distance between the ends of the podium and the edge of the blackboard should not be less than 200mm, the width should not be less than 650mm, and the height should be 200mm.

Expanded information:

The types of blackboards are now becoming more and more common. Now the types of chalkboards are also beginning to become complex and diverse, from the color of the blackboard, greenboard, whiteboard.

From the surface shape of the flat board, curved panel, from the structure of the composition of the bracket activity board, push-pull board, lifting board, magnetic blackboard.

From the use of teaching blackboards, office whiteboards, advertising boards, display boards. And teaching blackboard and electronic blackboard, multi-function combination board, combination of sliding blackboard, interactive whiteboard, projection board with screen and so on.

The characteristics of various types of teaching blackboards:

Green board board surface for dark green, written in chalk, does not stimulate the human eye, is conducive to the protection of eyesight; white board surface for white, more than with a variety of water-based color pen writing.

Color-coated steel plate plate surface coated with wear-resistant coating of high-quality alloy steel plate, plate thickness of 0.3mm-0.4mm, wear-resistant, do not fall off, do not fade, durable. Writing feel good, clear handwriting, easy to write, easy to erase. Less dust.

New material composite board is made of imported polymer alloy particles and epoxy resin by a one-time compression molding surface does not do any treatment, the board thickness of 3mm, smooth writing, handwriting is clear, permanent and non-slip, non-reflective, no residue after erasing, excellent visual effect, tested service life of more than 15 years.

Flat board board surface is flat and smooth, curved panel board surface is curved, to prevent reflections, can make sitting in all corners of the students can also see the board handwriting, suitable for larger classrooms. Bracket activity board will be blackboard with a variety of brackets, easy to move, wide range of uses. Push-pull board lifting board, can move along a specific track multi-directional, easy to write, conducive to viewing.

Magnetic blackboard in the blackboard lined with magnetic strips of magnetic rods, or attached to the surface of the magnetic particles. When used, it can be used to fix small teaching tools or pictures for easy display, such as magnetic nails and magnetic blocks.

Multi-functional combination board, interactive whiteboard, projection board with screen, pentatonic music blackboard, is the traditional sense of the blackboard and the combination of modern technology, the traditional blackboard, with electronic whiteboard, projector, computer, and the corresponding teaching software, hardware, the perfect complement to the defects of the traditional teaching, so that the modern teaching technology into the classroom, for today's development of the educational cause of inevitable trends.

Glass chalkboard: made of frosted glass, because of its fragile, dusty, inconvenient transportation has begun to fade out of the market.

Baidu Encyclopedia - Blackboard