Our Nose

Tuesday (09/06/2009)
a) Storybook: Our Nose
· Jen Ning shared a book on “Our Nose”. All animals and humans have nose. However, the sensitivity is different.
· Foxes sniffed for food. Elephants have long noses called trunks. They used them to bathe and also to feed themselves with food.
· People used them to smell. When a person is sick, they would catch a cold and caused flu.

b) Theory: Nose
* We have a nose with 2 nostrils. They have a small piece of cartilage and not bone. It has hair and mucus which would trap dust and some polluted particles.
· Thus, some unhealthy habit of digging nose and then sucking fingers are totally unhealthy.
· When we breathe, some molecules of air would land inside the nose and trigger the smell receptors, namely tiny hair. Then, smell messages are sent to a nerve in a brain. A normal person can smell 4,000 different odors.
· However, the “Bloodhound” dog smelling sense is hundreds of times more sensitive than humans. Thus, they always help police to search for criminals and evidences.

c) Sniff and guess
Some food were prepared.
· However, the kids eyes were blindfolded.
· Food: curry puff, doughnut, coffee and some tomato sauce.
· They enjoyed this experiment. Most kids could guess the tomato sauce as its their favourite food. Doughnuts too won half of the class's votes.
· Then, we ate the food together.