5th Grade Decoding/Word AttackReview

Lesson 20Structural Analysis: Prefixes im-, in-, ir- il-,

Suffixes –ant, -ent, -eer, -ist, -ian, -ous, -eous, -ious, Decode Longer Words

Structural Analysis: Prefixes im-, in- ir-, il-

Look at this word and watch me read it: immature

Turn to your partner and divide the word into syllables. Be sure to

identify the prefix and the root word.

im/ma/ture prefix-im, and root word mature

Did you notice that the prefix formed the first syllable of the word?

Structural Analysis: Prefixes im-, in- ir-, il-

Look at the chart below. Copy this chart into your journal. Read each word, then write its prefix and root word in the proper

columns. Be sure that you can blend the parts back together to read the word.

Word Prefix Root Word

inconsistent

immobile

illuminate

incapable

irrational

in con/sist/ent

im mo/bile

il lu/min/atein cap/a/ble

ir ra/tion/al

Structural Analysis: Suffixes –ant, -ent, -eer, -ist, -ian, ous, -eous, -ious

Look at this word and watch me read it: accountant

Turn to your partner and divide the word into syllables. Be sure to

identify the suffix and the root word.

ac/count/ant suffix-ant, and root word account

Structural Analysis: Suffixes –ant, -ent, -eer, -ist, -ian,

ous, -eous, -ious

Remember that:• Breaking longer words into smaller parts, such

as prefixes, suffixes, and root words can help you decode the words.

• The suffix –ian can be pronounced with 1 or 2 syllables depending on the word to which it is

attached.

Structural Analysis: Suffixes –ant, -ent, -eer, -ist, -ian, ous, -eous, -

iousLook at the chart below. Copy this chart into your journal. Read each

word, then write its suffix and root word in the proper columns. Be sure that you can blend the parts back together to read the word.

Word Root Word Suffix

absorbentglamorousassistantlibrarianpoliticianlaboriousbeauteous

ab/sorb ent

glam/or ous

as/sist antli/brar/y ian (note it has 2 syllables in this word)

pol/i/tic ian

la/bor ious

beau/ty eous

Decode Longer Words

When you come to a longer word, you can try several different strategies to

determine its pronunciation. You can…

Use letter sounds and look for familiar words and patterns.

Try dividing the word into syllables

Break the word into smaller word parts, such as roots and affixes.

Use a dictionary to clarify the word’s pronunciation.

Decode Longer Words

Look at the words below. Think about the strategies to decode words that we have practiced. Tell your partner

what each word is and what strategy you used.

irretrievable dubious miraculous contentment implode immaculate