Unit 5. Water, Light, Sound & Energy
How does light travel?
Discuss the concept of light travelling, shadow and refraction. Ask the children to draw and annotate a diagram of how a shadow is formed. Then watch the following videos:
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- BBC Primary Focus: Light & Sound: Sun & Earth
- BBC Primary Focus: Light & Sound: Shadows & Light
- BBC Primary Focus: Light & Sound: Speed of Light & Sound
- BBC Primary Focus: Light & Sound: Refraction
- BBC Learning Zone clip 219 How Light Travels [Flash Video]
- BBC Learning Zone clip 1625: Light travels in straight lines [Flash Video]
- BBC Learning Zone clip 2172 – Where do light and shadows come from? [Flash Video]
- BBC Primary Focus: Light & Sound: Teachers’ notes and pupil worksheets [PDF]
Try these interactive activities:
- KS2 Bitesize - Physical processes: How we see things [Flash activity]
- KS2 Bitesize - Physical processes: Light and Dark [Flash Activity]
- KS2 Bitesize - Physical processes: Light & Shadow [Flash Activity]
Now try these practical hands-on activities in the classroom. Before you start, describe the activity and ask the children what they expect to happen. At the end of each activity, ask them were they surprised with the results and how do they think it worked
- Exploratorium Make a pinhole camera [external link: article]
- Exploratorium Experiment with lenses [external link: article]
- Exploratorium Make a periscope [external link: article]
- Exploratorium Water based lens [external link: article]
- Exploratorium Making a cartoon [external link: article]
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