A man in a dark suite
A man in an office set-up
The work station in a room
A green chalk board
A white painted room
man in a suit standing
Green chalkboard mounted to a wall
A man giving a lecture
A man wearing a suit and tie
a man standing next to a desk
man wearing correctional glasses
man wearing blue tie over blue shirt
man wearing black suit jacket and pants
large green chalkboard on white wall
man standing up and talking
man teaching behind a desk
classroom with white walls and grey floor
dirty green chalkboard on white wall
a man in a suit
a dirty green chalkboard 
A green chalkboard
man in suit and tie standing next to desk with computers on it