length

Comparing objects to determine which is longer or shorter

measure objects using non standard units

We can measure objects using nonstandard units

such as connecting cubes, paper clips, pencils, erasers, crayons, hands, feet, and shoe.

The pencil is 5 small paper clip long

The pencil is 3 big paper clip long 

So will that be accurate  if we measuring using paper clip ? or eraser ?

Because of that, we must measure using rulers as tools for measuring with standard units.

units on the ruler we called sentimeters (cm)

 Example:

The pencil is 16cm long

The crayon is 7cm long.

The paper clip is 4 cm long .

So, which is the longest ? pencil, paper clip or crayon?

Which is the shortest ? pencil, paper clip or crayon?

100centimeter = 1meter

100 cm           =  1m

Try to cut a 1m rope ^ ^

for example: