Chapter 13
Weight and Mass
6
You Will Need
Tracks 85–86
3 1
Tracks 85–91
ELL Resources pp. 100–103
p. 100
Tracks 87–88
Understanding Weight and Mass
Paper Clip, Index Cards,
Scissors
p. 101
Using Language
Language Objectives
• Listen to new vocabulary about units of weight.
• Use new vocabulary words to complete and
write sentences.
Lesson Guide
• Show students a paper clip and a pair of
scissors. Ask: Which object is heavier? (the
scissors) Is a larger object always heavier
than a smaller object? (no) Say: Give me an
example where the larger object is lighter than
the smaller object. (a pillow and a brick, a
large leaf and a small stone)
• Play Track 85. Have students listen and follow
along on their pages. Ask: Why is measuring
weight important? (to compare the weights of
different objects, to identify objects that are
heavy or light)
• Play Track 86. Have students listen and repeat
these words aloud: pound, ton, weight. Invite
volunteers to read the sentences from the
Math Vocabulary section.
• Guide students to complete the Word
Meanings section.
Language Objectives
• Read a story about ounces and circle plural
and singular nouns.
• Complete and write sentences using the
singular or plural form of a given noun.
Lesson Guide
• Play Track 87. Have students listen to the
math story and follow along on their pages.
Invite volunteers to show and say the words
they circled in the story. (crackers, ounce,
ounces)
• Play Track 88. Have students read as they
listen to the introductory paragraph. Have
partners take turns naming the singular and
plural forms of nouns from the chart. One
partner names a noun and the other partner
names either its singular or plural form,
depending on which form was given.
• Guide students to complete the numbered
exercises. Invite students to read their
completed and original sentences aloud.
Assess
• Confirm that students understand the
math story.
Assess
• Note responses to discussion questions.
• Check students’ sentences for understanding
of singular and plural nouns.
• Check for correctly completed and original
sentences about weight.
Levels of English Proficiency
Levels of English Proficiency
B
Using the diagram, have students point to
and read the weights in the sentences.
B
Have students repeat the singular and
plural nouns in the chart after you.
I
Have partners take turns reading a
sentence they completed in the Word
Meanings section. Encourage them to
illustrate their sentences.
I
Have students take turns identifying the
plural forms of some singular nouns. Ask:
What is the plural form of pound? (pounds)
What is the singular form of tons? (ton)
A
Ask partners to take turns reading their
original sentences. Encourage them to
ask and answer questions about their
sentences. For example: Can a truck weigh
4 to 5 tons? (Yes, it can. / No, it can’t.)
A
Ask students to explain how to tell whether
a noun is singular or plural. Encourage
them to discuss exceptions to the -s rule.
(For example: deer, mice, geese, teeth)
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B
I
Beginner
Tracks 89–90
Intermediate
p. 102
A
Track 91
Advanced
p. 103
Solving Word Problems
Math Game
Language Objectives
Language Objectives
• Listen to and read a word problem
about weight.
• Listen to and follow directions to participate
in a math game.
• Write a word problem about weight.
• Choose the correct unit of measure for a
given item.
Lesson Guide
Lesson Guide
• Read the word problem aloud. Use the picture
to discuss the problem. Make sure students
understand the meanings of the words
package, weighed, pound, and ounces.
• Prepare a set of index cards with the words
from the game written on them.
• Read through the directions with students.
Have students identify the units of measure
for the game. (ounce, pound, ton) Invite
students to offer examples of things that
might be measured in each unit named. Write
them on the board.
• Play Track 89. Have students listen to the
word problem and follow along on their pages.
• Review the direction word circle. Tell students
that they will hear the problem again and be
asked to follow directions. (Audio directions:
Circle the words 1 pound 3 ounces; circle the
label in the picture.) Play Track 90.
• Play Track 91. Have students follow along as
they listen to directions for the math game,
Name That (Unit of) Measure!
• Say: Using a chart can help you think about a
word problem. Encourage students to use this
strategy when solving other problems. Guide
students to complete steps 1 and 2.
• Invite a volunteer to help you model a few
rounds of the game.
• Help students as they solve the problem with
a partner.
• Have students play the game with a partner.
Offer assistance as needed.
• Help students complete the Write About
It section.
Assess
• Observe students as they play the
math game.
Assess
• Ask students to explain how the game helps
them review the units of measure for weight.
• Note how students follow directions.
• Check that students completed the Write
About It section correctly.
Levels of English Proficiency
B
Read the weights in the completed Set It
Up chart and have students repeat them.
I
Have partners take turns reading the steps
and the weights in the chart. Ask: Why did
you multiply 1 pound by 16 ounces? (We
had to find the total number of ounces.)
A
Levels of English Proficiency
Ask students to explain how the chart
helped them solve the problem. Encourage
them to share the charts they made for the
Write About It section.
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B
Write the units of measure for weight on
the board. Read the words aloud and have
students repeat them after you.
I
Have students identify the appropriate unit
of measure for an object that you name.
A
Have students explain why certain units of
measure are more appropriate for certain
objects than for others. For example, why
do we use tons to weigh trucks rather than
pounds or ounces?
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Name
Chapter 13
Math Vocabulary
Date
Weight and Mass
How much do you weigh? Weight is a common measure
that is used to find out how heavy something is. Some weights
are measured in ounces, pounds, or tons.
Math Vocabulary
These words describe weight. Listen and repeat the words.
Weight
pound (lb)
ton (T)
weight
This dog weighs 25
pounds (25 lb).
This horse weighs about
1 ton (1 T), or 2,000 pounds.
Remember, 16 ounces are in 1 pound.
Word Meanings
Complete the sentences. Use the words pounds, tons, and weight.
1. The
weight
of an object tells you how heavy it is.
tons
.
pounds
A bag of potatoes can weigh about 10
2. A truck can weigh about 4 to 5
3.
.
Now use each word above in a sentence of your own.
4.
Answers will vary.
5.
6.
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Name
Chapter 13
Math Story
Date
Using Language
Math Story
Read the story. Circle the words crackers,
ounce, and ounces.
What’s o-z? Evan’s younger brother
Lucas asks, “What’s o-z?” Evan answers,
“O-z is short for the word ounce. An ounce
is a unit of measure. It tells us how much
this package of crackers weighs. “So this
package of crackers weighs 24 ounces?”
asks Lucas. “That’s right!” says Evan.
“Now let’s open the package and eat!”
Singular and Plural Nouns
A noun is a word that names a person, place, or thing. A noun can
be singular or plural. Singular means there is one. Plural means
there is more than one. In the story above, ounce is a singular noun
and ounces is a plural noun. Here are some other singular and plural
nouns. Listen and repeat the words.
Singular Noun
ounce
cracker
package
Plural Noun
ounces
crackers
packages
Complete the questions. Write the singular or plural noun.
1. Would you like a few
crackers
with your milk? (cracker, crackers)
ounces of juice? (ounce, ounces)
package of cheese? (package, packages)
2. Does your juice box have 4
3. Should we buy one
Now write two of your own questions. Use a singular noun in one
question and a plural noun in the other.
4.
Answers will vary.
5.
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Name
Chapter 13
Problem Solving
Date
Solving Word Problems
Read the Problem
Ivan bought a package of meat that weighed
1 pound 3 ounces. How many ounces of meat
did Ivan buy?
Set It Up: Use a Chart
You can use a chart to help you solve the problem.
Complete steps 1 and 2 below.
1 lb 3 oz
1. Write the weight of the meat.
16 oz
2. How many ounces are in a pound?
3. Multiply the weight of the meat in one pound
by the number of ounces in a pound.
16 oz x 1 = 16 oz
16 oz + 3 oz = 19 oz
4. Add the 3 ounces to your answer in step 3.
Talk About It
Read the problem to a partner. Then solve it together. Complete
steps 3 and 4 in the chart above. Use the back of this page to
show your work. Write the answer in a complete sentence below.
He bought 19 oz of meat.
Write About It
Write a word problem of your own like the one above. You may use
some of the same words or sentences. Have your partner solve it,
using a chart like the one above.
Example: Holly bought some cheese at the store that weighed
2 pounds 5 ounces. How many ounces of cheese did Holly buy?
37 ounces
Answers will vary.
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Name
Chapter 13
Math Activity
Date
Math Game
Name That (Unit of) Measure!
1. Play this game with a partner. You will need eight index cards.
2. Copy the words below onto your index cards. (If you like to draw,
you might also want to draw the pictures.) Mix the cards up and
then put them face down in a pile on a table.
3. Player 1 picks a card and reads the words. He or she names the
correct unit of measure—ounce, pound, or ton. For example, if
Player 1 picked the card with the words a few crackers, he or she
would say, “Ounce.”
4. If correct, Player 1 keeps the card and records 1 point on his or
her paper. If incorrect, Player 1 returns the card to the bottom of
the pile.
5. The game continues with Player 2 picking a card.
6. The game ends when there are no cards left. The player with the
greater number of points at the end of the game is the winner.
a truck
a basketball
a few crackers
a bag
of potatoes
a dog
a few grapes
two pens
a horse
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