This document discusses the prefixes "pre-" and "re-". It explains that pre- means before or prior to and provides examples like pretest and preheat. It then asks the reader to determine what prewash means. It also explains that re- has two meanings: to do again or to go back to the original state. Examples are given like review, reuse, and reheat. Finally, it provides words with the re- prefix and asks the reader to determine their meanings, such as redo, rewrite, and retie.

1. Prefixes

2. Let’s Review What We Already Know A prefix is a small word part that is added to the beginning of a base word, to change it’s meaning. The prefix “pre-” means before or prior to. pretest= a test you take before learning preheat= heating something up before you use it (an oven) Let’s try another word…what could prewash mean?

3. Good work word detectives! You’re ready to graduate to the next prefix!

4. Re- The prefix re- has two meanings. to do again to go back to the way it originally was

5. Re- means “again” review- to view or look over something again reuse- to use something again reheat- to heat something up again retest- to take a test again

6. Let’s Try It Use your knowledge of “re” and your knowledge of base words to figure out what the following words mean.

7. Redo to do something again I had to redo my homework because my mom said it was messy.

8. Rewrite to write something again I wanted to rewrite my paragraph with more description.

9. Retie to tie something again I had to retie my little brother’s shoes because they were too loose.

10. Review “ Re” is a prefix “ Re” has two meanings to do again to go back to the way it originally was