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You will need Acrobat
Reader installed to open the activity sheets.
You will also need the latest version of the flash player to be able to play swf files.
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• to generalise that when a sound is made something is vibrating
Children will demonstrate this by completing the task on page 1 successfully.
• to state that a sound has reached them by travelling through solid e.g. brick, wood and gas (air)
Children will demonstrate this by completing the task on page 2 successfully.
• to record e.g. in a table observations indicating how well sound travels through different materials
Children will demonstrate this by completing the task on page 3 successfully.
• to generalise that sound can travel through solids, liquids and gases
Children will demonstrate this by completing the task on page 3 successfully.
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Science:
QCA Unit 5F: Changing sounds
• that vibrations from sound sources travel through different materials to the ear
• that sounds can be made by air vibrating
• to suggest how to alter the pitch of a sound made by air vibrating and to test the prediction
• to listen carefully to sounds made, to record results in a suitable table and decide whether these support the prediction made
• to describe how the pitch of notes on a recorder (or other wind instrument) can be altered by changing the length of air column vibrating
Scientific enquiry
• turning ideas into a form that can be investigated and making predictions
• deciding whether the evidence is sufficient to support the prediction
Literacy (speaking and literacy)
• extend their ideas in light of discussion
• be able to put forward a point of view
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Introducing the activity
• Display Page 1 through a projector or as an OHT. Discuss the images with the children. The headline informs us that a new more pleasant alarm clock has been developed.
- How are sounds produced?
- Make a list of unpleasant and pleasant sounds. Why are they pleasant/unpleasant?
- How can sounds be changed?
- What does volume mean?
- What does pitch mean?
Leading the main activity
• Display Page 2 through a data projector or on an OHT. This is an information page about how sound travels and how pitch and volume can be changed. Maybe some practical activity that could be undertaken in the classroom include
- Blindfold one person and have him sit in the middle of the class. Have the other people form a large circle around the blindfolded person. Point to one of the people in the circle and have him say the seated person's name. The seated person must then try point in the direction of the voice and identify the name of the person who said his name. Try this experiment with the seated person using both ears and then again with one ear closed. How accurate can the centre person identify the caller and where the call came from?
• Display Page 3 through a or as an OHT. This is the page in which the children are involved in a practical investigation. You will need a number of glass milk bottles or jam jars. Fill them with different volumes of water and arrange them in a line. Ask the children to first tap the bottles in order with a beater and to describe what happens. Then to blow gently over the top of each bottle.
- What is vibrating to make the sound in each case?
- What do they notice? Can you explain why this happens?
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Telegraph
The news story behind the activity
BBC Science Clips
BBC online lesson on sound. Also some good IAW activities on sound
Kids Health
Interactive site on how your ear works
Natalie Duckett
The engineer behind the invention
National Institute on Deafness
A site full of activities connected to hearing and sounds; includes an interactive quiz
PPPST.COM
Free PowerPoint presentations about sound and hearing
Kill o' the Grange National School
Lots of practical ideas connected to sound and hearing including how to make a paper banger
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