How do we
measure mass??
There is a unit that we
measure by everthing!
What is the unit for
measuring our age??
Years!
This boy is 7 years old.
How long is this ruler?
It is 15 Cm long!
Centimeter is the unit
to measure a ruler!
•How much does this book weigh?
•How heavy is it ?
It is 50 grams!
Grams / kilogram is the
unit to measure objects like
a book or a toy!

How can we measure mass