The senses year 3

1. The sense of sight

2. Parts of the eye
eyebrow
eyelid
pupil
eyelashes
iris

3. Eyebrows protect the eye from sweat and
dust.

4. Eyelashes protect the eye from sweat and
dust.

5. Eyelids protect the eye from sweat and dust.

6. Our eyes are the organs of sight.

7. We can see different shapes, sizes & colours.

8. The pupils are black but the iris can be
different colours.

9. How the eye works

10. Light reflects off an object and enters the eye
through the pupil.
pupil

11. The light goes through the lens and make an
image on the retina at the back of the eye. The
image is upside down.

12. The retina sends the information to the brain.

13. The brain reads the signals and tells us what we
can see.

14. Group 1 Group 2 Group 3 Group 4 Group 5 Total
Brown
Green
Black
Blue
How many children have …………. eyes?

15. The sense of
hearing

16. The ears are the organs we use to hear

17. We can hear with our ears

18. We use our sense of hearing to hear loud
sounds and quiet sounds
https://www.youtube.com/watch?v=Rx7n7L6OnlA
Loud sounds Quiet sounds

19. Parts of the ear

20. EardrumCanal
Earwax

21. The earwax is a sticky substance inside
our ear canal. It protects our ears from
dirt and infection.

23. 1. Sound waves enter through the outer ear

24. 2. The waves hit the eardrum and make it
vibrate

25. 3. The liquid in the inner ear moves and send
informations to the brain
4. The brain reads the signals and tells
us what we can hear.
https://www.youtube.com/watch?v=SXhmXRbS6fw#t=31

26. 1. Ournose is the organ weuse tosmell.
MY SENSES: SMELL.
2. Airenters the nose throughthe nostrils.

27. MY SENSES: SMELL.
3. The olfactory nerve sendsinformationto
our brain.
4. Ourbrain tellsuswhat wecan smell.
BRAIN

28. 5. Ourbrain classifies odours in good
or bad smells.
MY SENSES: SMELL.
GOOD SMELL BAD SMELL
Flowershave a goodsmell.
Dirtysocks have a bad smell.

29. MY SENSES: SMELL.
6. We can smell about 10.000 different odours.
ACTIVITY: HOW MANYDIFFERENT ODOURS CAN YOU SMELL?
ACTIVITIES.
http://faculty.washington.edu/chudler/chsmell.html
ACTIVITY: MAKINGMODELS

30. The sense of taste

31. Our tongue is the organ we use to taste.

32. Our tongue is covered
in taste buds.
Taste buds identify
different tastes.

33. Nerves send
information to
our brain.

34. We can identify four basic tastes: sweet, salty,
bitter and sour.

35. The sense of touch

36. Our skin is the organ we use to touch.
Our body is covered in skin.

37. Our skin can tell us if something feels soft or
hard, hot or cold, rough or smooth.

38. Sensory nerves send information to our
brain.