Prefixes un-, re-, mis-, dis-
Review the meanings of un-, re-, mis-, dis-. Write the words unhappy, rewrite, misplace,
and disagree.
- Cover the prefix of the first word.
- What is the base word? Help students decode the base word if necessary.
- The prefix un- means “not” or “do the opposite of.” Adding un- to a word will
change the meaning of the base word.
- Use the word in a sentence to check understanding.
MODEL The first thing I do when I come to a word like unhappy
is break it into its word parts. I can take off un- and have happy. I
know what happy means. The prefix un- means “not,” so unhappy
must mean “not happy.” I use it in a sentence: I was unhappy I had
to leave. That makes sense, so I know that unhappy means “not happy.”
Model decoding rewrite, misplace, and disagree. (Re- means again; mis- means
bad or badly, wrong or wrongly; and dis- means not, lack of, opposite of.)
Model blending
unhappy,
rewrite, misplace, and
disagree. Then have
students blend the
words with you.
DECODE LONGER WORDS Write these words. Have students read them,
underline the prefixes, and circle the base words.
READ WORDS IN CONTEXT Write these sentences. Have individuals read
them, point out the words containing prefixes, and decode the word. Words
with prefixes are underlined.
They were uninterested in the dishonest activity. (not interested, not honest) |
The lost book had been mislabeled and replaced on the wrong shelf. (wrongly labeled, put back again) |
To assess, have students look through a book or magazine and find other
words with the same prefixes and figure out their meanings.
Review Word Parts

CONTRACTIONS
CONNECT Write these words:
| can’t |
I’ll |
let’s |
I’m |
they’re |
- We studied contractions.
- Look at the word can’t. What two words is this contraction made from?
(can, not)
Continue in the same way with the remaining words above. (I will, let us, I am,
they are)
DECODE LONGER WORDS Have individuals read the following words. Provide
help blending the words as needed.
| shouldn’t |
what’ll |
don’t |
doesn’t |
| oughtn’t |
couldn’t |
she’s |
mightn’t |
READ WORDS IN CONTEXT Have students read these sentences. Then have
them rewrite each sentence using a contraction.
| Abigail was not in the library. (wasn’t) |
| Pat could not have broken this glass. (couldn’t) |
| Shane did not know where the book was. (didn’t) |
| Put the milk in the refrigerator where it will stay cold. (it’ll) |
To assess, make sure that students place the apostrophe in the correct place
in each contraction.