Science - 3rd Grade Primary Education

5 Senses

We have got 5 different senses in our body:

Sight Hearing Touch Smell Taste

Sight

The organ we use to see is the eye. There are different parts in this organ. The parts we have outside are used to protect the eye:

The parts we have inside are the ones we use to see:

It is very important to take care of our eyes, so we should protect them as much as we can. For example, using sunglasses when it is very sunny or having enough light when we read. We also have to be careful, we shouldn't watch TV too closely or look to the sun directly.

Hearing

EyebrowEyel i d

Eyel a shes

The organ we use to hear is the ear. Some of the hearing parts are inside, and some others are outside:

The sound vibrates, goes along the ear canal and gets the ear drum. When the ear drum vibrates, it makes the small bones move and they take these vibrations to the cochlea. Then the cochlea sends this information to the brain. This is how we can hear different sounds.

Touch

The organ we use to touch is the skin. Every part of our body is covered by skin, so we can feel different things using our whole body. We feel things, but we can also feel pain or temperature (heat or cold).

Smell

The organ we use to smell is the nose. We smell different odors when we breathe, so we are always smelling everything. We can smell nice things like roses, or disgusting things like poo. Animals can smell things much better than us, dogs for example, use their sense of smell to recognize people, while we use our sight to recognize them.

Taste

The organ we use to taste is the tongue. Our tongue is full of little taste detectors called taste buds, and they taste everything we put inside our mouth. Every part of our tongue tastes a different flavour:

Our sense of taste can distinguish 4 different flavours: Sweet ( sugar, bananas, ...) Salty ( ham, popcorn, ...) Sour ( lemon, yogurt, ...) Bitter ( spices, unsweetened chocolate, ...)