Sally's new shoes did not fit because they were too big. To find the correct size, she needs to measure her feet with a ruler to know her exact shoe size. A ruler can also be used by Sam and Adam to determine who has the longer pencil case. However, a ruler cannot measure the volume of water in a cup, for that a graduated cylinder is needed. Charlie can use a balance at the grocery store to accurately measure 1 kilo of apples and 2 kilos of bananas. A digital balance is also used in labs to precisely determine the weight of objects.

1. Sally’s mother got
her a new pair of
shoes. But they
did not fit her.
The shoes were
bigger than her
feet.

2. To get the right pair of shoes,
we need to know our exact
shoe size.

3. What can sally use to know
how long her feet are ?

4. A ruler.

5. Sam and Adam want to know who has a longer
pencil case.
What tool can they use?

6. A ruler

7. But what if I want to know the exact
amount of water(volume)of my cup
of water, can I use a ruler ?

8. •To measure exact amount of
liquid, I use a graduated
cylinder.

9. Charlie went to the grocery
store. He wants to get 1 kilo of
apples and 2 kilos of bananas.
What tool can he use?

10. A balance

11. Also in the lab, I use a digital
balance to measure the exact
weight of things.