1

Objective: I can determine the effect affixes have on root words.

Key Vocabularyaffixprefixsuffixroot wordeffect

Essential Questions1. What is an affix?2. Define prefix and suffix.3. How do affixes change root words?

A root word is a word in its simplest form. A root word has nothing added to it.

Examples:PartGround WriteReadQuiet

Base WordsBase Words

Prefixes are added to the beginning of a root word.

They change the meaning of the root word.

Examples:

Un + happy = unhappy

Re + do = redo

Prefixes

Base Words

Write the root words on the back of your notetaker.

reheat

unhappy

antisocial

coworker

Prefix Meanings

de- = from, downinter- = betweenunder- = beneathanti- = againstmono- = oneco- = together, withre- = again

PrefixesAdd a prefix to the beginning of each word to make a

new word. Connect the new word to its meaning.

1. ____pilot

2. ____ground

3. ____claim

4. ____rupt

5. ____tone

6. ____grade

operate a craft together

beneath the surface of the earth

request or demand again

break between

one sound

step down

de- , inter- , under- , anti - , mono- , co- , re-

PrefixesAdd a prefix to the beginning of each word to make a

new word. Connect the new word to its meaning.

1. ___co_pilot

2. _under___ground

3. __re__claim

4. _inter___rupt

5. __mono__tone

6. __de__grade

operate a craft together

beneath the surface of the earth

request or demand again

break between

one sound

step down

de- , inter- , under- , anti - , mono- , co- , re-

Suffixes are added to the end of a root word.

They change the root word’s part of speech.

They can change the meaning of the root word.

wonder(n) + ful = wonderful(adj)

quick(v) + ly = quickly(adv)

Suffixes

Suffix Meanings

Suffix Meanings-ly = like or manner of-ful = full of-ed = in the past-able = able to, can do-en = made of-fic = making, causing

SuffixesAdd a suffix to the end of each root word. Draw

a line to its new meaning.

1. help____

2. scienti____

3. wood____

4. part____

5. quick____

6. agree____

full of aid

causing or making of science

made of tree fiber

came away

in a fast manner

can be of like minds

-ly , -ful , -ed , -able , -en , -fic

SuffixesAdd a suffix to the end of each root word. Draw

a line to its new meaning.

1. helpful____

2. scientific___

3. wooden____

4. parted____

5. quickly____

6. agreeable____

full of aid

causing or making of science

made of tree fiber

came away

in a fast manner

can be of like minds

-ly , -ful , -ed , -able , -en , -fic

Match each word with its definition.

1. healthful

2. slowly

3. unlock

4. reheat

5. silken

6. uncomfortable

7. reread

a. made of silk

b. To heat again

c. the opposite of lock

d. to read again

e. full of health

f. in a slow way

g. not comfortable

Match each word with its definition.

1. healthful

2. slowly

3. unlock

4. reheat

5. silken

6. uncomfortable

7. reread

a. made of silk

b. To heat again

c. the opposite of lock

d. to read again

e. full of health

f. in a slow way

g. not comfortable

14

Complete your Notetaker

• Now, you should be able to define your Key Vocabulary

• Answer the Essential Questions

Prefix Suffix Song

http://www.youtube.com/watch?v=ZOJrjNR7ZZM

15

Flash Cards

16

17

Objective: I can determine the effect affixes have on root words.

Key Vocabularyaffixprefixsuffixroot wordeffect

Essential Questions1. What is an affix?2. Define prefix and suffix.3. How do affixes change root words?

Prefixes• RE- After• Non- not• Pre- Before• Trans- Across• Ful- Full of• Sub – Under• Mono - One

• Anti – Against• Under- Under• Dis – Opposite or not• De- Opposite• Re – Again• Semi – Half• Bi - two

18

Suffixes• Ty – state of• Less – Without• Es – More than one• Ing – Changes a word

to a verb• Able – Can be done• Ious – Possessing the

quality of• Est – Comaparative

• Ness – State of or condition of

• Tion – Act or process • Ly – characterisitc of• Y – characterized by• Ful – full of• Ed – makes a word a

past tense verb

19