teacher's platform; podium; dais
Refers to the raised platform at the front of a classroom or lecture hall where the teacher stands.
The teacher stood at the podium and started the lesson.
教壇の上には教科書とチョークが置いてあった。
A textbook and chalk were placed on the teacher's platform.
The new teacher stepped up onto the platform looking nervous.
When the class ended, the teacher stepped down from the platform and went to the students' seats.
He had stood on the platform for thirty years, but he will leave teaching next year.