This document discusses different units of measurement including years for age, centimeters for length, and grams/kilograms for mass or weight, as illustrated through examples of a boy's age in years, the length of a ruler in centimeters, and the weight of a book in grams.

1. How do we
measure mass??

2. There is a unit that we
measure by everthing!

3. What is the unit for
measuring our age??

4. Years!
This boy is 7 years old.

5. How long is this ruler?

6. It is 15 Cm long!
Centimeter is the unit
to measure a ruler!

7. •How much does this book weigh?
•How heavy is it ?

8. It is 50 grams!
Grams / kilogram is the
unit to measure objects like
a book or a toy!