Decoding/Word AttackStructural Analysis: Prefix + Root + Suffix

5th GradeLesson 26

Look at these words and listen to me read them out loud:

invaluable reorganizationRemember, some words are made up of a root or root word plus a prefix and a suffix. Identify the prefix and

suffix in each word.

The prefix in invaluable is in and the suffix is able.The prefix in reorganization is re and the suffix is tion.

What is the root or root word in these two words? Turn and tell your partner.

Give a thumbs up if you said the root words are value and organize.

When looking at longer words, remember…

•Looking for prefixes, root words, and suffixes can help you break longer words

into syllables.•The prefix forms the first syllable of the

word.•The suffix forms the last one or two

syllables of the word.

Look at this chart. Identify the prefix, suffix, and root word in each longer word. Decode each word part and

then read the longer word.

Word Prefix Root or Root Word

Suffix

reestablishment

indispensable

illogical

discomforting

re- establish ment

in- dispense able

il- logic al

dis- comfort ing

Independent Practice

Look through your independent book or social studies book for words that contain a prefix, a root or root

word, and one or more suffixes. Create a chart like the one on the previous slide to record and analyze the

words you find (find at least 4 words).