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.
No, chalkboards are typically not magnetic. They are usually made of a material like slate or a special type of coated wood that is not magnetic. If you want a magnetic surface, you would need to use a separate magnetic board or add a magnetic backing to the chalkboard.
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.
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.
Officially Celsius, though some people still think in Fahrenheit.
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.
Students were using chalk at school in the early 1800s. Teachers had large chalkboards and students had slate boards to do their lessons on.