1. Prefixes

2. Prefixes
reading standard=1.8 Use knowledge of prefixes to determine the meaning of words.

3. 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?

4. 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?

5. A prefix is a word part added to the beginning of a base word.
Please keep in mind…the base word is a word by itself. Example pre-read. Read is a word by itself without the prefix “pre”. Pre + read=pre-read
What is a prefix?

6. A prefix changes the meaning of a word.

7. 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
reread
Pre-read
misspell

8. Prefixes
improper
incomplete

9. Prefixes
bicycle
nonstop

10. Prefix
disagree
reread

11. Prefixes
Pre-read
misspell

12. Importance
Why is it important to know prefixes?

13. Read the sentence.
Think: “What is the sentence about?”
Look at the prefix definition.
Choose and write the best prefix for the sentence.

14. 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)

15. 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)

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