Which of these would best be measured using a ruler?

What unit of measurement would you use to measure a football field?

1 yard = 3 __________

_{^{About how many inches is the green rectangle?}}

How long is the crayon?

The length of the pencil is about 

Estimate how long a ladybug is.

Estimate how long a football is.

Estimate the length of an arm

Estimate the measurement across the top of the teacher's desk.

The width of our classroom door is about

Estimate how tall a refrigerator is.

Estimate how tall a bicycle is.