Learning objective
Knowledge:
- To explain how insulating materials can be used to muffle sound.
Working scientifically:
- To identify when results or observations do not match predictions.
Success criteria
Knowledge:
- I can explain why some jobs require ear
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National curriculum
Science
Sound
Pupils should be
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Cross-curricular links
British values
- Mutual respect.
See
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Before the lesson
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Lesson plan
Recap and recall
Arrange the class into groups of five and provide each group with a whiteboard, pen and the Resource: Knowledge organiser: Science – Sound and Vibrations.
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Extended-mode explainer videos
How to extend your display to view the lesson page and preseantion mode simultaneously. Choose your operating system below to watch the video
Adaptive teaching
Pupils needing extra support
Could write the ‘easy’ question for the recap and recall activity; could use the Knowledge organiser to help them make their predictions.
Pupils working at greater depth
Could write the ‘impossible’ question for the recap and recall activity; should draw a table for recording the results of their investigation; should design ear protectors using the results from the experiment to help them choose materials and consider what other properties the ear protectors need (e.g. light, durable); could choose an extension activity relating to sound insulation from the Resource: Stretch and challenge: Sound and vibrations.
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Assessing progress and understanding
Pupils with secure understanding indicated by: explaining why some jobs require ear protection;
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Knowledge outcomes
- I can explain that jobs exposing people to loud sounds require ear protection.
- I can describe how insulating materials protect the ears from damage by muffling loud sounds.
- I can list some examples of materials that are good insulators of sound (including foam, polystyrene and towelling.)
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Vocabulary definitions
-
ear protectors
Safety devices worn to reduce exposure to loud noises and prevent hearing damage.
-
insulator of sound
A material that does not let sound pass through quickly.
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