Blackboard

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, better known as chalk.

Excerpt from the Wikipedia article “Blackboard”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Stefan-Xp, CC BY-SA 3.0, via Wikimedia Commons.