5 What sounds do you hear every day? Do they
have a high or a low pitch?
•
Ask students to close their eyes and think about the
sounds they hear at different times in the day. They
make a list and then decide if each sound has a high or
low pitch. Circulate and help. Elicit examples, e.g.,
alarm
clock – high, birds singing – high, car engines – low,
people talking – low, fridge – low, baby crying – high
.
•
Ask students which kind of sounds dogs can hear that we
can’t hear. They can then read the Guess What! for the
page to check the answer. Explain that there are special
whistles for dogs, which produce sounds that are too
high for humans to hear.
Workbook page 44
1
Complete the sentences. Use the words in the box.
•
Students read and complete the sentences.
Key:
2
low
3
high
4
lower
5
quickly
6
higher
2 Look and answer the questions.
•
Students look and answer the questions.
Key:
2
thin(ner)
3
Alice
4
Because the string is thick(er).
5
The sound is higher.
3 In your notebook, design and write about a
string instrument.
•
Students design and write about a string instrument.
Ending the lesson
•
If you have string instruments, hand them out and ask
students to try to play a high sound and then a low
sound. Circulate and ask individuals to explain what they
did (e.g.,
I made the string shorter. / I used a thin string
).
•
If you don’t have any instruments, write the following
words on the board:
string, make sounds, vibrate, change
the pitch, shorter, longer, thinner, thicker, high, low
.
Students practice explaining how to vary pitch in pairs.
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