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Science notes, unit 4

Humans

Textbook Science Year 1 (DLP), pages 31–40

What this chapter covers

  • You can name the five senses and the body part for each sense (4.1.1)
  • You can use your senses to say what things are like and to sort them into groups (4.1.2, 4.1.5)
  • You can use one or more senses to tell what an object is (4.1.3)
  • You can use other senses when one sense cannot be used, and name things that help (4.1.4)

We find out about the world with our senses. Each sense uses a part of our body.

4.1Parts of the body and the senses

We have five senses: sight, hearing, smell, taste and touch.
A boy with an eye for sight, an ear for hearing, a nose for smell, a tongue for taste and a hand for touch, each with a label
Each sense has its own body part.
SenseBody partWe use it to
SightEyessee
HearingEarshear
SmellNosesmell
TasteTonguetaste
TouchSkinfeel
Remember: the skin is on all of your body. The hand is a good part to feel with.
Which body part do we use to hear?
Show answerHide answer
The ears.

What each sense tells us

SenseIt tells us
Sightcolour, size and shape
Hearingsounds, such as soft or loud
Smellsmells, such as nice or bad
Tastesweet, sour, salty, bitter or no taste
Touchcoarse (rough), smooth, soft or hard
Do not taste things unless a grown-up says it is safe. Keep loud sounds away from your ears.
Zaki licks a lollipop and says "It is sweet!" Which sense does he use?
Show answerHide answer
Taste, with his tongue.

4.1.2–4.1.5Using our senses

Sorting things

To classify is to put things into groups. We use our senses to see how things are the same or different.
A sapodilla, an apple, an orange and an ambarella
Hafiz and Alia buy four fruits.
FruitTasteShape
SapodillaSweetOval
AppleSweetRound
OrangeSourRound
AmbarellaSourOval
Example: sort the fruits by taste
Sweet: sapodilla, apple.
Sour: orange, ambarella.

We can also sort the same fruits by shape. Round: apple, orange. Oval: sapodilla, ambarella.

Clay, a bell, a cupcake, a whistle, a sponge and a marble
We can sort these things into soft and hard.

Soft things: clay, cupcake, sponge. Hard things: bell, whistle, marble. We use the sense of touch.

Is an orange sweet or sour? Is it round or oval?
Show answerHide answer
Sour. Round.

Naming things with one or more senses

We can use one sense or many senses to tell what an object is. A fruit cube can be known by its colour (sight), smell and taste.

When one sense cannot be used

Linda in a dark room reaches out her hands to find a torch on the floor
Linda cannot see in the dark. She uses touch to find the torch.
When one sense does not work well, we can still use our other senses.
A pair of spectacles and a hearing aid
Spectacles help the eyes. A hearing aid helps the ears.
  • Spectacles help us see clearly.
  • A hearing aid helps us hear.
A blindfold covers the eyes. We use touch, hearing and smell to guess what is in the box. We do not taste unknown things.
Amir cannot read the small words in his book. What can help him?
Show answerHide answer
Spectacles.

Pictures: Science Year 1 (DLP) textbook, pp. 32, 34, 35, 37, 38.

Summary

SenseBody partExample
SightEyesThe apple is red and round.
HearingEarsThe bell is loud.
SmellNoseThe rose smells nice.
TasteTongueThe orange is sour.
TouchSkinThe sponge is soft.