Name_____________________
Learning Objective
Today, we will use prefixes to determine1 the meaning of words.
1
figure out
CFU
What are we going to do today?
What does determine mean?
Activate (or provide) Prior Knowledge
1. Which one is locked?
B
A
2. Which face is happy? A
A
Which one is unlocked? A
B
Which face is unhappy?
B
B
CFU
Teacher completes question 1. Students complete question 2. What is the difference between the two words locked/unlocked? What is the
difference between the two words happy/unhappy? (pair-share) Looking at the pair of bolded words, underline the letters that are
different. The group of letters at the beginning of the word changes its meaning. These groups of letters are called prefixes. Today, we will
use prefixes to determine the meaning of words.
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Concept Development
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
• A prefix has a meaning of its own.
• The prefix modifies2 the meaning of a word the same or almost the same way each time it is used.
2
changes (synonym)
Examples: rePrefix + Word
Prefix
Meaning
Meaning of Word
Sentence
reuse
use again
Please reuse your paper bag
when you go shopping.
redo
do again
I had to redo my homework
because I spilled water on it.
build again
We had to rebuild our house
after the tornado ruined it.
rebuild
retry
re- means
“again”
try again
Will you retry solving the math
problem?
Not examples of prefixes:
The letter group “re” in ready is not a prefix because ady is not a word.
The letter group “re” in rest is not a prefix.
CFU
Why is the “re” in rest not a prefix? Explain your answer.
Which word has a prefix? How do you know? Which word does not have a prefix? How do you know?
A ready
B retry
In your own words, what is a prefix? A prefix is ______________________________.
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Skill Development/Guided Practice
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix meanings
repreundis-
Sample Words
again
before
not
not
Sentence
rewrite, rebuild, restate, retry
precook, pregame, prewash, pretest
unhappy, undone, unreal, unsure
dislike, disagree, disappear, displease
Prefix Meaning
Word Meaning
1.
We will repaint the baby’s room blue.
re
again
paint again
___means______
Repaint means _________.
2.
I have to rewrite my book report.
re
___means______
again
Rewrite means _________.
write again
3.
To save time, preheat the oven.
pre
___means______
before
before
Preheat means heat
_________.
4.
We saw the preview before the movie.
pre
___means______
before
Preview means view
_________.
before
5.
The silly story was untrue.
not
___means______
Untrue means _________.
un
not true
6.
I’m unsure what time the game starts.
___means______
Unsure means not
_________.
not
sure
un
7.
I distrust my cat when she is outside.
___means______
Distrust means _________.
not
not trust
dis
8.
Do you disagree with my answer?
dis
___means______
Disagree means not
________.
not
agree
CFU
(#1a) How did I/you identify the prefix?
(#3) How did I/you determine the meaning of the word?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Importance
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
1. Using prefixes to determine the meaning of words will help you
read and understand long and complex words.
review; disbelieve; preregister; unfriendly
2. Using prefixes to determine the meaning of words will help you do
well on tests.
Sample Test Question:
1. By knowing the prefix in the word, preview, you
can determine that it means:
A
B
C
D
to view again
to view before
to not view
to view between
There are currently no CST-released questions that address using prefixes to determine the meaning of words.
CFU
Does anyone else have another reason why it is important to use prefixes to determine the meaning of words? (pair-share) Why is it
important to use prefixes to determine the meaning of words? You may give me one of my reasons or one of your own. Which reason is
more important to you? Why?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Concept Closure
Jackie wrote a list of words with the prefix re-.
Is her list correct? Explain your answer.
A remove
B restart
C really
Skill Closure
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix Meanings
re-
again
rewrite, rebuild, restate, retry
un-
not
unhappy, undone, unreal, unsure
Sentence
1.
2.
Sample Words
Prefix Meaning
Word Meaning
My battery stopped working
because it needed to recharge.
___means______
Recharge means ___________.
re
again
charge again
The answer is unknown.
___means______
Unknown means ___________.
un
not
not known
Summary Closure
What did you learn today about using prefixes to determine the meaning of words? (pair-share)
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Independent Practice
Name _______________________
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix meanings
repreundis-
Sample Words
again
before
not
not
Sentence
rewrite, rebuild, restate, retry
precook, pregame, prewash, pretest
unhappy, undone, unreal, unsure
dislike, disagree, disappear, displease
Prefix Meaning
Word Meaning
1. I have to reorder the pictures.
again
again
___means______
Reorder means order
__________.
re
2. She had to rewash the dirty dishes.
___means______
again
Rewash means wash
_________.
re
again
3. To save time, precook the meat.
___means______
pre
before
before
Precook means cook
_________.
4. We took a pretest before the final test.
pre
___means______
before
Pretest means test
_________.
before
5. The pieces of cake were unequal.
not
___means______
un
Unequal means _________.
not equal
6. Her hair color was unusual.
___means______
not
un
Unusual means _________.
not usual
7. Do not disobey your parents.
___means______
not
dis
Disobey means _________.
not obey
8. My mother will disapprove of my
grades.
not approve
___means______
Disapprove means _______.
dis
not
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Periodic Review 1
Name _______________________
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix meanings
repreundis-
Sample Words
again
before
not
not
Sentence
rewrite, rebuild, restate, retry
precook, pregame, prewash, pretest
unhappy, undone, unreal, unsure
dislike, disagree, disappear, displease
Prefix Meaning
Word Meaning
1. We were prebilled for the hotel room.
before
___means_____
pre
billed before
Prebilled means __________.
2. The students will recreate the story.
___means_____
again
re
Recreate means _________.
create again
3. I reread my notes before the test.
___means_____
re
again
Reread means read
________.
again
4. The team did pregame warm ups.
pre
___means_____
before
Pregame means before
_________.
a game
5. I was unsatisfied with my lunch.
not
___means_____
un
Unsatisfied means not
________.
satisfied
6. The accident will disable him for life.
___means_____
not
dis
Disable means ________.
not able
7. The ice cube disappeared in the heat.
___means_____
not
dis
Disappear means not
________.
appear
8. The new furniture was unattractive.
___means_____
un
not
Unattractive meansnot
_____.
attractive
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Name _______________________
Periodic Review 2
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix meanings
Sample Words
re-
again
rewrite, rebuild, restate, retry
pre-
before
precook, pregame, prewash, pretest
un-
not
unhappy, undone, unreal, unsure
mis-
wrongly
misbehave, miscount, mislabel
Sentence
1.
2.
Please recount the raffle tickets.
The kids misbehaved in the store.
3.
4.
I hate it when my shoe comes untied.
The doorbell was left unanswered because no
one heard it ring.
Listen carefully so you do not misunderstand.
5.
6.
7.
8.
If you do not preregister for classes, you might not
get into the ones you want.
My mom asked me to refold the laundry.
Make sure to preclean the dishes before you put
them into the dishwasher.
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
Word Meaning
Prefix Meaning
again Recount means ______________.
____means______
re
count again
behaved
____means______
wrongly Misbehaved means ________.
mis
wrongly
____means______
Untied means ________.
un
not tied
not
un
____means______
Unanswered means_____________.
not answered
not
____means______
mis
wrongly Misunderstand means
________________.
understand wrongly
before Preregister means
____means______
pre
register before
_______________.
re
____means______
Refold means fold
___________.
again
again
pre
____means______
before
Preclean means ______________.
clean before
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
Periodic Review 3
Name _______________________
A prefix is a letter or group of letters added to the beginning of a word to change its meaning.
Use prefixes to determine the meaning of words.
Step #1: Read the sentence, paying attention to the bolded word.
a. Identify the prefix. (underline)
Step #2: Determine the meaning of the prefix. (write) Hint: Use the chart.
Step #3: Determine the meaning of the word. (write)
Step #4: Read the sentence out loud and tell what it means.
Prefix meanings
bipreundis-
two
before
not
not
Sentence
Sample Words
bilingual, bifocal, bicultural
precook, pregame, prewash, pretest
unhappy, undone, unreal, unsure
dislike, disagree, disappear, displease
Prefix Meaning
Word Meaning
1. Her desk was disorganized.
not
___means____
dis
not organized
Disorganized means __________.
2. I rode my bicycle to the store.
two
bi
___means____
two wheeled
Bicycle means __________.
3. The movie had an unexpected
ending.
un
not
___means____
not expected
Unexpected means ________.
4. The swing set came prebuilt.
pre
built before
before Prebuilt means _________.
___means____
5. The old bed is uncomfortable.
not
un
___means____
6. The shirt needs to presoak to get the
sauce stain out.
before
before Presoak means soak
pre
___means____
_________.
7. I will discontinue my e-mail account.
not
dis
___means____
continue
Discontinue means not
___________.
8. Because he could not see well, he
had to wear bifocal1 glasses.
bi
two
___means____
two lenses
Bifocal means ___________.
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
1
(focal) lens
comfortable
Uncomfortable meansnot
________.
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.
EDI – Cognitive, Teaching and English Learners Strategies
Learning Objective :Today, we will use prefixes to determine the meaning of words.
Cognitive Strategies
Teaching Strategies
Elaboration
Demonstration
Targeted vocabulary: determine, prefix, modifies
Language Strategies
Vocabulary Words
Academic
determine
Content
prefix, modifies
Support
Multiple-Meaning
Vocabulary
Strategy
Synonym
modifies
Definition
determine. prefix
Homophone
Internal Context Clue
Listen, Speak
Read
Similar Sounds
Tracked Reading
Decoding Rules
Write
Writing
Content Access Strategies
Comprehensible
Input
Cognates
Graphic Organizer
Contextual Clues
Contextualized
Definitions
Pictures
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? feedback@dataworks-ed.com
3rd Grade Reading Vocabulary 1.8 (4Q)
Use knowledge of prefixes (e.g., un-, re-, pre-, bi-, mis-, dis-)
to determine the meaning of words.
Lesson to be used by EDI-trained teachers only.