Chalk was not invented. It occurs naturally.
Chalk was not invented. It occurs naturally.
Chalk was not invented by anyone; it is a naturally occurring mineral; and has been used by people since the stone age. Nobody knows who first discovered and used it.
Sharon McKay invented sidewalk chalk, after she wrote books that included it.
William Hilt the Great invented chalkboard chalk. This was back in the neanderthal days.
in the himalayers
Chalk wasn't "invented"; it exist naturally in large mineral deposits such as those at the cliffs of Dover.
It was invented in 1801 by James Pillans in Edinburgh, Scotland.
pants was invented in Persia for the first time.
plastic invented by Alexander Parkes for the first time.
WHITE Chalk isn't something that was invented. Chalk is a soft porous rock which is a form of limestone made up of the mineral calcite. Blackboards and blackboard chalks have been around since the late 1700's.
== == Teachers who were allergic to calcium sulphate or chalk.
An Unknown person