Prefixes

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Prefixes
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Prefixes

• reading standard1.8 Use knowledge of prefixes to
  determine the meaning of words.

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Prefixes

• Today we are going to use prefixes to determine
  the meaning of words.
• Determine figure out
• What are going to do today?
• What are we going to determine?

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Prefixes

• Raise your hand if you have ever added sugar to
  your cereal for breakfast?
• Did adding the sugar change the taste of the
  cereal?

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A prefix is a word part added to the beginning of
a base word. Please keep in mindthe base word is
a word by itself. Example pre-read. Read is a
word by itself without the prefix pre. Pre
readpre-read What is a prefix?
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A prefix changes the meaning of a word.
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Prefixes and Definitions
Examples
im- not in- not bi- two non- not dis- not or
opposite of Re-do again Pre-before Mis-incorrect
improper incomplete bicycle nonstop disagree rerea
d Pre-read misspell
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Prefixes

• improper

• incomplete

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Prefixes

• bicycle

• nonstop

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Prefix

• disagree

• reread

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Prefixes

• Pre-read

• misspell

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Importance

• Why is it important to know prefixes?

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• Read the sentence.
• Think What is the sentence about?
• Look at the prefix definition.
• Choose and write the best prefix for the
  sentence.

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Prefixes

• Choose and write the best prefix for the
  sentence.
• 1. Please _______ my glass with milk.
• (fill again)
• 2. You must _________ the oven to 300
  degrees. (heat again)

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Prefixes

• Choose and write the best prefix for the
  sentence.
• 3. He _____ his steps through the woods.
• (traced again)
• 4. You should _____ your notes before a test.
  (view again)

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Review

• A prefix is a word part added to the beginning of
  a base word.
• A prefix changes the meaning of a word.

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A suffix is a word part added to the end of a
root word.
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A suffix also changes the meaning of a word.
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Suffixes We Know
Examples
-er one who -or one who -less without -able,
-ible can be
farmer actor useless buildable reversible
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Prefixes

• bicycle

• nonstop

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Thats nonsense, said his brother Jake. You
can use my bike.
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Gee, thanks, said Randy, hopping on the bike.
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See, I can be likable! said Jake with a grin.