Estimating and Measuring lengths

Front

What is length?

Back

Length is a measure of how long something is from one end to the other.

Front

What tool do we use to measure length?

Back

We use a ruler to measure length.

Front

What is the unit of measurement for small lengths?

Back

Centimeters (cm) are used to measure small lengths.

Front

What is the unit of measurement for larger lengths?

Back

Inches (in.) are often used to measure larger lengths.

Front

How do you read a ruler?

Back

You start at the end of the object and look at the number where the object ends.

Front

What is an estimate?

Back

An estimate is a rough guess of a measurement.

Front

If a pencil is about 10 cm long, what is a close estimate?

Back

A close estimate could be 9 cm or 11 cm.

Front

What is the length of a standard paperclip?

Back

A standard paperclip is about 4 cm long.

Front

How do you compare lengths?

Back

You can compare lengths by placing them side by side or measuring them.

Front

What is the closest length of a typical eraser?

Back

A typical eraser is about 4 cm long.