The eyes

Welcome everyone!
Today:
Discussing homework (page 52)
Explanation about the eye 
Making homework
Discussing test 
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Slide 1: Slide
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This lesson contains 10 slides, with text slides.

time-iconLesson duration is: 60 min

Items in this lesson

Welcome everyone!
Today:
Discussing homework (page 52)
Explanation about the eye 
Making homework
Discussing test 

Slide 1 - Slide

What are we going to learn?
We are going to learn: 
What light is
How we see light
Why someone would need glasses 

Slide 2 - Slide

Light
Light is a form of radiation: a small amount of energy. When light bounces of a surface into your eye, you can see that object. 

Slide 3 - Slide

Outside eye
You eye has a bunch of different parts on the outside. The light goes through your pupil in your eye. Your pupil can change in size, depending on the amount of light. 

Slide 4 - Slide

Muscles pupil

Slide 5 - Slide

Inside eye
There are also a lot of parts inside your eye. 

Slide 6 - Slide

How does the eye work?

Slide 7 - Slide

Retina
Your retina is the part where the nerve cells convert the stimulus to a impulse. You have 2 different types of nerve cells in your eye: rods (black and white) and cones (colour). 

Slide 8 - Slide

Glasses
Sometimes your lens can't make a sharp image. In that case, you can get extra lenses (glasses). When you are shortsighted you can see up close and you need a concave lens. When you are farsighted, you ned convex lenses (reading glasses). 

Slide 9 - Slide

Get to work!
The homework for next week will be the exercises of page 54 and 55. You can start working on them now. 

Slide 10 - Slide