a large, rectangular surface a black, green, blue, or white board a stand or mount to support the board a chalk tray a chalk holder an eraser markers or chalk for writing on the board
blackboard which is a large, rectangular surface blackboard which is a black, green, blue, or white board blackboard which is a stand or mount to support the board blackboard which is a chalk tray blackboard which is a chalk holder blackboard which is an eraser blackboard which has markers or chalk for writing on the board