7th Grade Math

Get ConnectED

Convert Measurements

PART A BCDEF

Multi-Part

Lesson 1

624 Measurement and Proportional Reasoning

Main Idea

Determine the

appropriate unit of

measure. Compare

and contrast units of

measure.

Units of Measure

ELEVATORS Elevators

have been around since

the mid-1800s. All

elevators have a

maximum weight limit.

Is the maximum weight

limit of this elevator

more likely to be be

3,500 ounces or

3,500 pounds?

In this activity, you will explore different units of measure.

Locate the following objects. Estimate their measures.

Copy and complete the table.

Object Estimated Length Estimated Weight/Mass

Math textbook ■ inches ■ centimeters ■ pounds ■ kilograms

Pencil ■ inches ■ millimeters ■ ounces ■ grams

Board eraser ■ inches ■ centimeters ■ ounces ■ grams

Classroom door ■ yards ■ meters ■ pounds ■ kilograms

Chair ■ feet ■ centimeters ■ pounds ■ kilograms

Find the actual measures of two of the objects in

the table.

the Results

1. Would the maximum weight limit of an elevator be measured
   in ounces or pounds? Explain your reasoning.


2. Compare and contrast your measurements for each object. Are
   there any units that are similar?


3. MATH IN THE MEDIA Use the Internet or another source to research
   which countries use the customary system of measurement and
   which countries use the metric system of measurement.

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