chalk

I write on the blackboard with chalk.

私は白墨を使い黒板に書きます

I write on the blackboard with chalk before morning assembly.

私は朝の会の前に白墨を使い黒板に書きます

I write on the blackboard with chalk in the classroom before morning assembly.

私は朝の会の前に教室で白墨を使い黒板に書きます

I write on the blackboard with white chalk in the classroom before morning assembly.

私は朝の会の前に教室で白い白墨を使い黒板に書きます

I write today's date on the blackboard with white chalk in the classroom before morning assembly.

私は朝の会の前に教室で白い白墨を使い黒板に今日の日付を書きます