The Eye

• Objectives:

• Know about eye structure and function

• Understand how eyes work

Starter: Pupil reflex

• Cover your eyes for 30 seconds

• Open them and look into your partners eyes and watch what happens

• Can you explain what is happening and why?

Starter 2: Finding your blind spot

• Find your blind spot by using the spot and cross on the card

• Hold the card 60cm away from your face, with dot on the right

• Close your LEFT eye and stare at the cross

• Move the card slowly towards your face

• What happens?

The dot should disappear. Why?

• The image falls on a blind spot at the back of the eye on your retina

• There are no light sensitive cells here because this is the place on the retina where the nerves leave the eye to the brain

Main: Senses biovideo

• As you watch the video, answer the questions about our senses and also the specific questions about sight

http://www.kscience.co.uk/animations/eye.htm

Eye structure

• Cut and stick or label parts of eye

• Use diagram from text to help you

• List the functions of each part (see co-ordinated science page 135)

• Answer questions 1-3 page 136/7

Eye experiments

• Try out 2 more eye experiments if time allows

• Look at the eye model and find each part

Plenary: how do we see colours?

• 3 types of cone cells on our retina, sensitive to different wavelengths of light

Homework

• Imagine what it would be like without ONE of your senses. Write a story or a poem about it.

OR research ONE animal with a

specially developed sense.