Section 1
📘 Capacity
New Concept
The quantity of liquid a container can hold is the capacity of the container.
What’s next
Next, you’ll explore the U.S. Customary and metric systems, learning how to convert between units like quarts and liters.
In this Grade 4 Saxon Math Intermediate 4 lesson, students learn to identify and use U.S. customary units of liquid capacity, including fluid ounces, cups, pints, quarts, and gallons, and practice converting between these units. The lesson also introduces metric liquid measurement with liters and milliliters, and connects both systems by comparing equivalent measures such as 1 quart versus 1 liter. Hands-on activities guide students through estimating and measuring capacity using real containers, building a foundational understanding of measurement in both systems.
Section 1
📘 Capacity
The quantity of liquid a container can hold is the capacity of the container.
Next, you’ll explore the U.S. Customary and metric systems, learning how to convert between units like quarts and liters.
Section 2
Capacity
U.S. Liquid Measure conversions:
Think of U.S. liquid units as a family tree! Two cups are children of a pint, two pints are children of a quart, and four quarts are children of a gallon. Understanding this family relationship helps you easily convert any amount, making you a master of liquid measurement.
Section 3
Metric liquid measure
The relationship between milliliters and liters:
The metric system loves the number 1000! A milliliter is a tiny drop, and you need exactly one thousand of them to fill a one-liter bottle. This makes converting super simple—just multiply or divide by 1000 by moving the decimal point three places. It's that easy!
Section 4
Comparing U.S. and metric measures
The label on a gallon of milk often shows both measures:
When U.S. customary units and metric units meet, they are not exactly equal! A liter is a little bigger than a quart, which helps you choose the right amount at the store. Just remember that one full gallon is a little less than four liters. Now you know!
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Section 1
📘 Capacity
The quantity of liquid a container can hold is the capacity of the container.
Next, you’ll explore the U.S. Customary and metric systems, learning how to convert between units like quarts and liters.
Section 2
Capacity
U.S. Liquid Measure conversions:
Think of U.S. liquid units as a family tree! Two cups are children of a pint, two pints are children of a quart, and four quarts are children of a gallon. Understanding this family relationship helps you easily convert any amount, making you a master of liquid measurement.
Section 3
Metric liquid measure
The relationship between milliliters and liters:
The metric system loves the number 1000! A milliliter is a tiny drop, and you need exactly one thousand of them to fill a one-liter bottle. This makes converting super simple—just multiply or divide by 1000 by moving the decimal point three places. It's that easy!
Section 4
Comparing U.S. and metric measures
The label on a gallon of milk often shows both measures:
When U.S. customary units and metric units meet, they are not exactly equal! A liter is a little bigger than a quart, which helps you choose the right amount at the store. Just remember that one full gallon is a little less than four liters. Now you know!
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter