黒板

1. Origins, structure, and basic meaning

• Structure: 黒板, read こくばん, means a board written on with chalk.
• Basic usage: It is used in classroom scenes where dates and assignments are written up or the writing is erased after class.
  • 先生は黒板に今日の日付と課題を書いた。

2. Common pitfalls and similar expressions

• What 黒板を消す means
  • 黒板を消す means erasing the writing and other marks on the board. The name of the board stands for the content written on it.