Some schools still use Chalkboards because some teachers prefer to use them, or because the school is lacking in funds to upgrade to new whiteboards, or Smart Boards.
A sponge is used for cleaning, absorbing liquids (water), cleaning the chalkboards (in places they're still in use) etc.
Schools use chalkboards, whiteboards, etc in many sizes. So the size in metres are variable.
Originally, chalkboards were made of slate stone and were not magnetic. Some modern chalkboards today are magnetic. Also growing in popularity is the whiteboard, some of which are also magnetic.
Not necessarily chalkboards, although they had a mineral called slate, though they did not know what it could do, so therefore didn't use it
no they used wax tablets
There are a number of countries which still use corporal punishment in schools. Some of them include Malaysia, Costa Rica, India, Pakistan, Philippines and so many others.
Estimating the exact number of people using chalkboards globally is challenging, as usage varies widely across educational institutions, homes, and businesses. Traditionally, chalkboards have been widely used in classrooms, and millions of teachers and students have relied on them. However, with the rise of digital technologies and whiteboards, their use has declined. While precise figures are unavailable, it is safe to say that chalkboards are still utilized by a significant number of people, particularly in developing regions and certain educational settings.
Australian state schools (public schools) do not use corporal punishment. A tiny number of independent schools still use corporal punishment, with the agreement of the parents.
Chalkboards are typically made from a smooth surface material called slate or a synthetic material like porcelain enamel over a steel core. The surface is designed to be receptive to chalk and easy to write on, while also allowing for easy erasing.
Some schools use them, but most are private or advanced special schools.
Some schools have reduced or eliminated cursive writing instruction in favor of focusing on typing and digital literacy skills. However, some schools still teach cursive writing as part of their curriculum. Ultimately, it varies depending on the school and district.
Officially Celsius, though some people still think in Fahrenheit.