In math we use
the sign
≈
when
we estimate a
number.
Unit
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1
Listen and repeat.
[photo 073l]
Project
6
6
Find five objects.
Estimate and then
measure how long and
how heavy each one is.
2
Watch the video.
How much?
How heavy?
How long?
meter = 00 centimeters
kilogram = ,000 grams
liter = ,000 milliliters
4
Answer the questions.
What units of measurement do we use to
find out how long something is?
2
How many centimeters are there in 3 meters?
3
Why do we sometimes have to estimate
measurements?
4
What words do we use when we estimate?
5
Which is more difficult to estimate,
how tall or how heavy your friends are?
How long is your sleeping bag? How heavy is
your backpack? How much water is there in
your water bottle? When we don’t know and we
can’t measure something,
we have to guess, or
estimate, measurements.
To help us estimate, we can think about other
objects we know. For example, Alice knows her
tent is 4 kg. Her backpack feels a bit heavier.
Alice
estimates that her backpack is about 5 kg.
When we’re estimating, we use words like
it’s
about …
or
it’s more than … , but less than …
For example:
The tent is about 250 cm long.
Or:
The tent is more than 2 m long, but less than
3 m long.
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3
Read and listen.
➞
Workbook page 8
CLIL: Math
23
3
2
3
4
5
7
8
2
6
0
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1
Listen and look.
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2
Listen and repeat. Then match.
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32
3
Listen and answer the questions. Then ask and answer.
4
What are you good at? Ask and answer.
The girl in picture 0.
Who’s good at reading poetry?
a
do acrobatics
b
do cartwheels
c
do tricks
d
juggle
e
make sculptures
f
paint portraits
g
play instruments
h
do
street dancing
i
read poetry
j
tell jokes
26
Vocabulary
➞
Workbook page 20
I’m better than my friend at
, but I’m worse than him/her at
.
My friend is the best in the class at
.
Lily
Max
Ava
Oscar
Juggling
1st
2nd
3rd
4th
Doing
cartwheels
2nd
3rd
4th
1st
Unit 2
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5
Read, listen, and look.
7
Complete the riddle about a friend. Then ask the class to guess.
6
Read and say the names. Then make more sentences.
Focus
Focus!!
Focus
Focus!!
good
better the best
bad
worse the worst
Paul, Zoe, and Jake are all good at
street dancing. Paul is the best at
street dancing. Zoe is better than
Jake at street dancing, but she’s
worse than Paul.
Jake is the worst
at street dancing, but he’s still
good at it!
Paul
Zoe
Jake
She’s better than Oscar at juggling,
but she’s worse than Max.
2
He’s the worst at juggling.
3
He’s
better than Ava at doing
cartwheels, but he’s worse than Lily.
4
She’s the best at juggling.
5
She’s worse than Max at doing
cartwheels.
6
He’s better than Ava at doing
cartwheels, but he’s worse than
her at juggling.
Say it!
Say it!
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8
Which word sounds the strongest? Listen and repeat.
Oscar
isn’t the best at juggling.
(Lily is the best at juggling.)
Oscar isn’t the
best
at juggling.
(He’s the worst at juggling.)
Oscar isn’t the best at
juggling
. (He’s the best at doing cartwheels.)
Grammar Pronunciation
27
➞
Workbook page 2
28
Grammar
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9
What did Alex make at the beach? Listen and choose.
a
a sandcastle
b
a sand portrait
c
a sand sculpture
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10
Listen again and practice.
Emma:
What did you do on the weekend, Alex?
Alex:
I went to the beach with my family. We had
a sand sculpture competition. Look!
Emma:
Cool! Who’s
the best at making sand
sculptures in your family?
Alex:
I am, I think. Look, it’s a crocodile.
Emma:
Really?
Alex:
And this is my sister’s.
Emma:
Oh, yes!
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