LESSON
18
name _____________________________________________ date ____________
Root Words nav and form
navy navigate
formula
reform
uniform
naval
navigable
conform
transform
format
❙
Some words share
the same root.
All of a nation’s warships
are in its navy.
Root:
240 Vocabular y Words Kids Need to Know: Grade 3 © 2012 by Linda Ward Beech, Scholastic Teaching Resources
Nav means “ship.”
Form means “shape.”
Things relating to a navy are naval.
If you navigate a ship, you direct its course.
If a river is navigable, boats can sail on it.
A formula explains how to prepare a mixture.
If you conform, you act in a way that agrees with the rules.
When you reform something, you make it better.
Transform means “to change in some way.”
When something is uniform, it is always the same.
A format is the size and shape something takes.
A. Read the vocabulary word. Find and circle two other words that
mean almost the same thing.
1. conform
agree
accord
annoy
2. navigate
sail
relate
cruise
3. transform
alter
change
send
4. uniform
steady
irregular
unchanging
5. reform
refer
improve
correct
B. Underline the root in each word.
1. naval
2. formula
3. navy
57
4. format
LESSON
18
name _____________________________________________ date ____________
Root Words nav and form
navy navigate
formula
reform
uniform
naval
navigable
conform
transform
format
1. The mayor wants to __________________ the government to make it better.
2. A __________________ is an outfit that is the same for everyone.
3. A sailor serves in the __________________ .
4. The scientists developed a __________________ for a new medicine.
5. The captain will __________________ the ship into port.
6. The students decided on a new __________________ for the talent show.
7. A new coat of paint would __________________ this drab room.
8. There is a __________________ base near this town.
9. Students should __________________ to the rules at school.
10. The large ship had to turn around because the river was not
__________________ .
B. Read each question. Choose the best answer.
1. Which one can you wear?
2. How do you conform?
3. Which one is a recipe?
4. Which one can you join?
❒
❒
❒
❒
unicycle
accept
formula
naval
❒
❒
❒
❒
uniform
reject
fortune
navy
Writing to Learn
Explain why it is helpful to know the root of a word. Use two
vocabulary words as examples.
58
240 Vocabular y Words Kids Need to Know: Grade 3 © 2012 by Linda Ward Beech, Scholastic Teaching Resources
A. Use what you know. Write the best word to complete each sentence.
LESSON
18
name _____________________________________________ date ____________
Root Words nav and form
Use the clues to complete the puzzle.
1
2
3
4
5
6
240 Vocabular y Words Kids Need to Know: Grade 3 © 2012 by Linda Ward Beech, Scholastic Teaching Resources
7
8
9
Across
1. describing navy things
2. a country’s armed forces at sea
6. remake in some way
7. change to improve
8. a river large and deep enough for
ships to travel on
9. the shape and size of something
Down
1. related to the word navigation
3. what a conformist does
4. a plan for making or doing
59
something
5. a police officer wears one
240 Vocabular y Words Kids Need to Know: Grade 3 © 2012 by Linda Ward Beech, Scholastic Teaching Resources
Lesson 18, page 57: A. 1. agree,
accord 2. sail, cruise 3. alter, change
4. steady, unchanging 5. improve,
correct B. 1. naval 2. formula
3. navy 4. format page 58:
A. 1. reform 2. uniform 3. navy
4. formula 5. navigate 6. format
7. transform 8. naval 9. conform
10. navigable B. 1. uniform
2. accept 3. formula 4. navy
page 59: Across: 1. naval 2. navy
6. transform 7. reform 8. navigable
9. format; Down:1. navigate
3. conform 4. formula 5. uniform
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