a flag and a clock

• a flag a clock
• a blackboard a picture
• a map a speaker
• a door a teacher
• a curtain a uniform
• a window a computer
• a pupil a schoolbag
• a litter bin a chair
• a sheet of paper a ruler
• a hole punch a marker
• a stapler a calculator
• a glue stick a pen
• a pair of scissors an eraser
• a piece of chalk a diary
• an atlas a backpack
• an apple a book
• a dictionary a pencil
• a binder a desk
• a projector a table
• a ballpoint pen