Lesson: Estimating Length: Customary Units Mathematics • 4th Grade

In this lesson, we will learn how to estimate the lengths of different real-life objects by choosing the most logical unit of length and value in customary units.

Lesson Plan

Students will be able to

recognize that a mile is a customary unit for measuring length or distance,
choose the most appropriate customary unit to measure the length of an object,
choose the most appropriate customary unit to measure the height of an object,
estimate the length of objects in inches, feet, yards, or miles,
solve simple word problems involving choosing appropriate units.

Lesson Worksheet

Q1:

Which of the following heights could be the cruising altitude for an airliner?

Q2:

Choose an appropriate unit for measuring the width of the Atlantic Ocean.

Q3:

Which is a more reasonable estimate for the length of a bedroom: 1 rod or 4 rods?