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

In this lesson, we will learn how to estimate and measure weight using customary units and choose the appropriate unit of measurement in real-world situations.

Lesson Plan

Students will be able to

choose whether ounces, pounds, or tons are the most appropriate units to measure the mass of an object,
estimate the mass of an object,
determine which object is most likely to have a given mass.

Lesson Worksheet

Q1:

While writing down a dog’s information for record, a vet wrote “18 pounds, 4 ounces”. Which of the following was the vet recording?

Q2:

Which of the following is the most appropriate estimate for the weight of a real cell phone?

Q3:

Which of the following is the most appropriate estimation for the weight of a real car?