Unit 5
A C T I V I T Y 31
Unit 5, Session 4.7
Vocabulary
capacity
cup
gallon
pint
quart
• measuring cups
• plastic gallon jugs
• markers
• water (or sand)
• pint containers
• quart containers
• Activity 31 Master (see below)
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Activity 31
MASTER
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Give each group a pint and a quart container to help students visualize the relative sizes
of these units of capacity. How many cups are in 1 pint? How do you know?
Students might say:
“There are 2 cups in 1 pint because there are 2 marks for a pint, and
each mark is 1 cup.”
Ask students to use their jug to tell how many pints are
in a quart, how many cups are in a quart, and how many
quarts are in a gallon. As each relationship is developed, have
students write the relationships on their papers as shown.
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Some other units of capacity are pint and quart. Label your second mark “pint”
and your fourth mark “quart.” From the bottom, count up 16 marks, and label
that mark “gallon.” Circulate to make sure students have their jugs labeled correctly.
NOTE Students choose appropriate
customary units and measures
of capacity.
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Show students how to measure 1 cup. Measure and
pour 1 cup of water into the jug. With your marker,
mark the level for 1 cup. Keep pouring into the jug
by cupfuls. Mark the level for each cup you pour.
Label your first mark “cup.”
Materials
&
Customary Units of Capacity
25 MIN
Give each group a measuring cup, a gallon jug,
a marker, and at least a gallon of water (or sand).
Today we are going to learn about capacity.
Capacity tells how much a container can hold.
The small container holds about 1 cup . The jug
holds about 1 gallon.
Use after
Un i t 5
AC TIVIT Y
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1 pint ⫽ 2 cups
2 pints ⫽ 1 quart
4 cups ⫽ 1 quart
4 quarts ⫽ 1 gallon
What unit would you use to measure sugar for a recipe?
What unit would you use to measure water in a bathtub?
Have students describe other situations where they have experienced these units
of capacity.
Use after Unit 5, Session 4.7
© Pearson Education, Inc. 3
Display pint, quart, and gallon containers that are partially filled with water. Have
students estimate how much water is in each container in terms of cups, pints, quarts,
or a fraction of a gallon.
PR AC TICE
In the Activity 31 Master, students choose appropriate customary units and
measures of capacity.
DIFFERENTIATION : Suppor ting the Range of Learner s
Give each group a variety of containers. Have them first estimate and
then use their measuring containers to find each capacity to the nearest cup, pint, quart,
or gallon.
Unit 5: Equal Groups
Session 4.7 (End-of-Unit Assessment)