Narrative representation for ‘convection’ in a gas.

Setting				Code of textbooks
Experiment to observe the movement of gas above a heat source		Candlelight, incense smoke		3a, 4a, 5a, 6a
		Stove		7a
		Alcohol lamp, liquid in a beaker, vapor		09a
Experiment to observe the movement of air at different temperatures in one space		Window, incense smoke		3a, 4a, 5a
		Door, incense smoke		6a, 7a, 07a
Situations heating the gas in everyday life		Heater		1a, 7a, 07a, 15a, 15b, 15c, 15e, 15f, 15g, 15h, 15i, 15j
Situations cooling the gas in everyday life		Freezer		1a, 15d
		Air conditioner		07a, 15b
Mean of visualization	Process	Vector	Actor	Examples of visualization	Code of textbooks
None	Implicit	Implicit	Incense smoke		3a, 4a, 5a, 6a, 7a, 07a
Arrow	Unidirectional	From the top of the stove to the ceiling	Implicit		1a, 09a, 15a, 15g, 15j
	Circular	RED: from radiator to window BLUE: from window to radiator	Implicit		07a, 15b, 15c, 15f, 15h
		From top to side of the stove	Implicit		15d, 15e
Wavy line	unidirectional	From the top of the stove upwards	Implicit		7a
	unidirectional	From above the stove toward the opposite end of the room	Implicit		7a