Narrative representation of ‘heat transfer’ caused contacting two objects with different temperatures.

Setting				Code of textbooks
Situations contacting between high-temperature and low-temperature objects in everyday life		Boiled egg/noodle, water		15a, 15b, 15c, 15e, 15f, 15i
		Hand warmer, hand		09a, 15b, 15c, 15d, 15f
		Ice, fish		7a, 15c, 15f, 15j
		Wound, Ice pack		09a, 15d
		Hot water/rice, hand		7a, 07a
		Ice cream/cold water, hand		07a, 15g
		Egg/butter, fried pan		15a, 15c
		Hot water, milk		7a
		Freezer, water		7a
		Iron, clothes		15g
		Instant food, hot water		15j
Mean of visualization	Process	Vector	Actor	Examples of visualization	Code of textbooks
None	Implicit	Implicit	Implicit		7a, 09a, 15h
	Verbal	From pan to butter	Heat		15c
Arrow	Unidirectional	From hand to cup	Implicit		07a, 15b, 15e, 15f, 15g
	Radial	From hand warmer to hand	Implicit		15a, 15d, 15j