Touch
• Skin
• Skin sensitivity
• Stimulus of contact
• Pressure stimulus
• Pain stimulus
• Temperature and heat
• Body temperature
• Thermal stimulus
• See with touch
• Fingerprints
• Skin hygiene
Smell
• How the matter is made
• Aggregation states of the matter
• Change in states
• Nose: the smell organ
• How the smells are felt
• How to identify the smells
• Addiction to smells
• Nose hygiene
Taste
• Tongue: organ of taste
• How we feel the flavors
• The four basic flavors
• Taste and smell
• Taste and sight
• Good tastes and bad tastes