

先生がこくばんに字を書きました。
後ろの席からこくばんの字が見えません。
授業の後でこくばんをきれいにしてください。
"こくばん(黒板)" is in the lesson "Classroom" (Level 9), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.