Prefixes are


 

A prefix can be added to a word to make a new word.

A prefix is added at the beginning of a base word.

Let's look at the prefixes
re- and un-.


When the prefix re- and un- are added to a base word the meaning of the base word changes.


The prefix re- means "again" or "back to."  
The prefix un- means "not" or "the opposite of."
 
Prefix + Base Word = New Word Meaning
re- make remake to make again
re- tell retell to tell again
un- fair unfair not fair
un- sure unsure the opposite of sure

Let's practice using prefixes!

Click on the construction worker to play a game!

 

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