Drawing Interior (of a classroom)

over three weeks, students move around the classroom to draw its interior and objects within it. 

each session was between 1.5hr-2hr45mins. 

the rule were 1.to draw within the destinated boundaries. 2. draw what they can manage during the timeframe. there is no requirement to complete. 3. no erasing or fresh pieces will be given. Rather to draw over or on the areas.