Old-school chalkboards and whiteboards are inappropriate for serious business presentations.

Chalkboards

A smooth, hard panel, usually dark green or black, used for writing on with chalk in educational settings.

Whiteboards

Smooth, white surfaces used for writing or drawing with markers, often used in teaching, meetings, and brainstorming sessions.

Business Presentations

Formal talks or proposals given in a business context to convey information or pitch ideas.