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Science topics ages 9 - 10
Changing sounds
Curriculum relevance
| Online lesson plan
Offline lesson
plan |
Worksheet |
Activity |
Quiz
Online lesson plan
Objectives
Understand how the pitch of an instrument can be altered
Understand how the loudness of an instrument can be altered
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National Curriculum
England: Key Stage 2, Sc1 2f; Sc4 3f
Wales: Key Stage 2, Physical processes, 3.7
Northern Ireland: Key Stage 2, Physical processes, Sound, a
Scotland: 5-14 Guidelines, Science, Properties and uses of energy, Level D
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Resources required
Online activity from Science Clips website: Changing sounds
Four cards with High pitch, Low pitch, High volume, Low volume written on
them
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Teaching activities
Introduction
Ask children to think of words that describe sounds, e.g. loud, quiet,
vibration, pitch. What things make sounds? Lead the children to point out sound
is made when there is a vibration. Tell the children that the frequency of a
sound is a measure of the number of vibrations or waves per second. Explain
that a sound with a high frequency will make a high-pitched sound, and one with
a low frequency will make a low-pitched sound. Explain that pitch is a measure
of how high or low a sound is.
Activities
Open the online activity on the interactive whiteboard. Tell the children they are going to look at the sounds made by three instruments. Select the one-string guitar. Show children how to shorten or lengthen the string, and how to give it a gentle or strong pluck. Select the drum. Show children how to tighten or loosen the skin, and how to give it a gentle or strong bang. Select the bottle filled with water. Show children how to alter the amount of water, and how to give it a gentle or a strong blow.
Divide the children into groups with a computer for each group. Allow each group time to work through the tasks that are written (and read aloud) at the top of the screen. Ask children to record their observations. Walk around the groups, ensuring children understand that, for example, for stringed instruments: the longer the string, the lower the pitch and the shorter the string, the higher the pitch. Ensure for each instrument, they record both parts of the relationship.
Plenary
Put the four cards face down at the front of the class (the two volume cards
in one pile and the two pitch cards in a second pile). Ask a child to come out
and select one card from each pile. The child must then play an instrument on
the online activity (on the interactive whiteboard) to match the two cards
taken. The rest of the class should then guess which cards the child had
selected.
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Extension
Ask children to click on the Sorter button on the online activity, and arrange
the sounds in order of pitch and loudness. They could then attempt the
quiz.
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Suggested homework
Challenge the children to design and make a musical instrument that can be
played at high or low volume, and at high or low pitch.
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