L ea rn i n g Obj e cti v e
Name ______________________
Today, we will use prefixes to analyze1 the meaning of words.
1
carefully look at
CFU
What are we going to do today?
What does analyze mean? Analyze means ___________________________.
Acti va t e ( o r p r o vi de ) P ri o r K n o wl e dg e
Circle the letters at the beginning of the words that are the same.
1.
redo
2.
rewrite
CFU
Students, you already know that a letter or a group of letters added to words gives the words a new
meaning. These are called prefixes. Today, we will use prefixes to analyze the meaning of words.
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4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Co n c e pt D ev el opm e n t
A prefix is a letter or group of letters added to the beginning of a base word to
change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Prefix &
Word with Prefix &
Meaning
Definition
unun + able = not able
(not)
un + kind = not kind
re(again)
Using the prefix in a sentence
Lee was unable to finish his report
because he got sick.
Sarah’s unkind words hurt my feelings.
The teacher asked Martha to rewrite
re + write = write again the report due to her messy handwriting.
re + do = do again
Tom had to redo the math problem on
the board.
Not an example of a prefix:
uncle
un- is not a prefix because cle is not a word.
reach
re- is not a prefix because ach is not a word.
CFU
What is the difference between the word redo and the word reach?
Which word has a prefix? How do you know?
A real
B rerun
In your own words, what is a prefix? A prefix is_________________.
DataWORKS Educational Research
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4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Ski l l Dev el o pm en t /G u i ded P ra cti c e
A prefix is a letter or group of letters added to the beginning of a base word to change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify3 the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select4 the best definition for the underlined word. (circle)
3 find
(synonym)
4
choose (synonym)
Prefix
hyperinterde-
Meaning
over, extreme
between, among
remove
1. The boy was so hyperactive he could
not sit still.
2. The editor was hypercritical pointing out
every mistake in the newspaper.
Prefix:________ means__________
Prefix:________ means__________
A a person who is sluggish
B a person who is lazy
C a person who is always moving
3. A cracked window will devalue the price
of the car.
A a person who is never critical
B a person who doesn’t make mistakes
C a person who is extremely critical
4. The international airport has flights to all
different countries.
Prefix:________ means__________
A to have a clean car
B to remove value from something
C to buy a new car
5. We asked Dad to debone the fish
before we ate it.
Prefix:________ means__________
A to be in one country
B to go between different countries
C to leave a country
6. The new interstate highway connects
California and Arizona.
Prefix:________ means__________
Prefix:________ means__________
A cook the bones of the fish
B a bone shaped as a D
C to remove a bone from something
A two different highways
B a highway that goes between different
states
C a highway that does not end
CFU
(#1a) How did I/you identify the prefix in the underlined word?
(#1c) How did I/you identify the clues that help know the meaning of the underlined word?
DataWORKS Educational Research
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©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Rel e va n c e
A prefix is a letter or group of letters added to the beginning of a base word to
change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
1. Using prefixes to analyze the meaning of words will help you figure
out the meaning of more complex words.
reteach – teach again
pretest – test before
posttest – test after
2. Using prefixes to analyze the meaning of words will help you do well
on tests.
Sample Test Question:
1. Read this sentence.
Anna and her friends enjoyed the previews at
the movie theater.
In this sentence, the prefix pre- tells us that
A
B
C
D
they liked the movie.
they went somewhere before the movie.
they viewed part of a movie before it was out
they enjoyed viewing nice clothes
CFU
Does anyone else have another reason why it is relevant to use prefixes to analyze the meaning of words?
(pair-share) Why is it relevant to use prefixes to analyze the meaning of words? You may give me one of
my reasons or one of your own. Which reason is more relevant to you? Why?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
A prefix is a letter or group of letters added to the beginning of a base word to change its
meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Ski l l Cl osu r e
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select the best definition for the underlined word. (circle)
Prefix
hyperde-
Meaning
over, extreme
remove
1. Sue is very easily upset and
hypersensitive when people make
fun of her.
2. He had to defrost the window so he
could see through the snow.
Prefix:________ means__________
Prefix:________ means__________
A not sensitive
B very strong
C extremely sensitive
A to remove the frost
B to replace the frost
C to make new frost
Co n st ru ct e d R e sp on s e Cl o su r e
Georgina chose the letter B below for the definition of derail. Was she correct?
Explain your answer.
1. The train derailed last night, and there were a total of six cars off the track.
A drive a train
B remove from a rail
C remove track
Su mm ar y Cl o su r e
What did you learn today about using prefixes to analyze the meaning of words?
Day 1 _____________________________________________________________
__________________________________________________________________
Day 2 ____________________________________________________________
__________________________________________________________________
DataWORKS Educational Research
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©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Name _____________________
In d ep en d en t P ra cti c e
A prefix is a letter or group of letters added to the beginning of a base word to change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select the best definition for the underlined word. (circle)
Prefix
Meaning
two, twice
bihalf
semiunder
sub1. Each year, my favorite store has biannual 2. America’s first biplane was built and
sales with great prices.
flown by the Wright brothers.
Prefix:________ means__________
Prefix:________ means__________
A half of the time
B twice a year
C once a year
3. Our semiannual report cards are sent
home in the middle of the school year.
A two planes
B a plane with two wings
C planes flying under something
4. The subway is a fast and a great
source for traveling in a big city like
New York.
Prefix:________ means__________
Prefix:________ means__________
A within the year
B to do a year again
C half of a year
5. Your eyebrow is shaped like a semicircle.
A a long passageway
B under the train
C an underground passageway
6. The subzero freezer kept the food
frozen.
Prefix:________ means__________
Prefix:________ means__________
A to make a circle again
B to get out of a circle
C half of a circle
A under zero
B to frost over
C to remove zero
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Name _____________________
P eri odi c R evi ew 1
A prefix is a letter or group of letters added to the beginning of a base word to change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select the best definition for the underlined word. (circle)
Prefix
antiimun-
Meaning
opposing or against
not
not
1. My sister is unable to tie her shoes
because no one has showed her how.
2. The anticrime program was keeping the
city safe.
Prefix:________ means__________
Prefix:________ means__________
A not able to do something
B able to do something
C to do something again
3. The 3D alien movie was unreal;
everything was completely fake.
A against crime
B not locked
C to lock again
4. She was very antisocial and would not
talk to anyone.
Prefix:________ means__________
Prefix:________ means__________
A against a person who is fake
B to be real
C not real or actual
5. The water was impure because of the
poisons that were being released into
the river.
A willing to talk to everyone
B always talking to other people
C against talking to other people
6. The boy was very impolite by not
waiting his turn to talk.
Prefix:________ means__________
Prefix:________ means__________
A not pure water
B water that is pure
C water against being pure
DataWORKS Educational Research
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©2012 All rights reserved.
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A a boy talking nicely
B against being polite
C not polite
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Name _____________________
P eri odi c R evi ew 2
A prefix is a letter or group of letters added to the beginning of a base word to change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select the best definition for the underlined word. (circle)
Prefix
dispostunder-
Meaning
removal or not
after in time, later
below or not enough
1. Please postdate the delivery package
for next week.
2. The judge had to disallow the question
because it was not fair.
Prefix:________ means__________
Prefix:________ means__________
A to put a date before
B to put a date of a later time
C to remove a date
3. I disapprove of our choice for lunch
because I don’t care for the food they
serve.
A to not allow something
B to judge something
C to allow something later
4. The posttest will be after the lesson
today.
Prefix:________ means__________
Prefix:________ means__________
A to not approve of something
B be happy with someone
C to approve later
5. The underdeveloped kitten needed time
to grow before leaving the litter.
A take a group test
B a test after a lesson
C not take a test
6. If you underachieve in school, you will
not get good grades.
Prefix:________ means__________
Prefix:________ means__________
A be over developed
B quickly developed
C not developed enough
A not achieve enough
B to over achieve
C to achieve later
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
Name _____________________
P eri odi c R evi ew 3
A prefix is a letter or group of letters added to the beginning of a base word to change its meaning.
 A prefix has a meaning of its own.
A base word is a word in its basic form, without a prefix or suffix.
Use prefixes to analyze the meaning of words.
Step #1: Read the sentence, paying attention to the underlined word.
a. Identify the prefix in the underlined word. (circle)
b. Write the prefix and its meaning.
c. Identify the clues that help know the meaning of the underlined word. (underline)
Step #3: Select the best definition for the underlined word. (circle)
Prefix
autobimicro-
Meaning
self or same
two
small
1. The plane was on autopilot as it flew
over the ocean.
2. Grandma uses her bifocals to read a
book and see things that are far away.
Prefix:________ means__________
Prefix:________ means__________
A
B
C
3.
A
B
C
4.
to drive a large plane
to be driven by someone
to drive by itself
The tiny microfossil proved that birds
lived at the same time as dinosaurs.
lenses that have two focal lengths
lenses that focus on their own
very large lens
President Bush wrote his autobiography
about his life after being president.
Prefix:________ means__________
Prefix:________ means__________
A a very old fossil
B two fossils of an animal
C a very small fossil
5. She is bilingual, and speaks both
Spanish and French.
A a biography written by oneself
B a whole biography
C a biography about someone who is
dead
6. The flu germ is a tiny microorganism that
can make you sick.
Prefix:________ means__________
Prefix:________ means__________
A one language
B one who speaks no languages
C speaking two languages
A an organism built by someone
B a small organism
C a very large structure
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.
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DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
4th Grade Reading Vocabulary 1.4 (1Q)
Know common roots and affixes derived from Greek and Latin and use this
knowledge to analyze the meaning of complex words (e.g., international).
Lesson to be used by EDI-trained teachers only.