Science at key stage 3 (Year 8)
Unit 8K: Light
Section 4: How do we see things?
|
|
Objectives |
| Children should learn: |
- that we see non-luminous objects because light is reflected from them and enters our eyes
- to represent the path of light by rays
|
Activities |
|
Outcomes |
|
Children: |
- Elicit pupils' ideas about how we see things. Use their views to develop the idea that light travels into our eyes from luminous objects for us to see things. Extend this to non-luminous objects.
- Provide pupils with a picture containing luminous and non-luminous objects, and ask them to draw in some of the light rays that enable us to see these objects.
|
|
- explain how non-luminous objects are seen, using words,
eg 'because light is reflected from them and enters our eyes', and ray diagrams
|
|
Points to note |
- At key stage 2 pupils are likely to have carried out activities illustrating that they see light sources when light from them enters the eyes. However, pupils may retain an
'active eye' model of seeing and draw rays travelling from the eye towards the seen object.
- Encourage pupils to represent the path of light as a single ray.
- Extension: pupils could imagine people in a mirrored room,
eg dance studio/gym, and draw lines to show how objects can be seen both directly and by reflection.
|
|
|
This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
|
|
|
