Blackboard
noun
A black board is a blackboard.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
まだ黒板を消さないでください。
Please don't erase what's on the blackboard yet.
誰ですか、黒板消しを教室のとびらの間にはさんで落としたのは？
Who is it that wedged the blackboard eraser between the classroom door and made it fall?
うちの高校では、電子黒板を使った授業を取り入れています。
At our high school, we've incorporated lessons using electronic blackboards.
黒板が使えないので、ホワイトボードを持参しています。
We can’t use the blackboard so I’ll bring in a whiteboard.