1. Spelling Lesson 33 Spelling words with the Prefix ex- excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit Spelling Tip The /eks/ or /egz/ sounds in the first syllable of a word are often spelled ex.

2. 1-15. Write the Core Words. Circle the letters in the first syllable. 16-20. Write the Challenge Words. Circle the letters that spell the /eks/ and /egz/ sound. excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

3. A famous ( 1 ) on space talked to our class. She gave us a chance to look closely at, or ( 2 ), the idea of living in space. Hearing her ( 3 ) her opinion of the problems involved helped us better understand space life. It takes a lot of work to get ready to ( 4 ) outer space. For ( 5 ), space travelers have to get used to weightlessness. They must also be able to work in ( 6 ) temperatures. They must be willing to ( 7 ) their travel time if the trip takes longer than they planned. Also, they must expect to ( 8 ) regular food from their diets. Exploring the Future excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

4. excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit The speaker showed us an ( 9 ) copy of a space suit. It must have cost a lot of money to make. “How ( 10 ) it must be to explore space!” I wanted to ( 11 ), but I did not say what I was thinking. For take-off, a rocket has to ignite, or ( 12 ), under the spaceship. That is the part I wanted to ( 13 ) myself from. Let me ( 14 ) what I mean: I want to ( 15 ) what I know about the world. But I do not want to make an exit from it too soon!

5. 16. a former president 17. a former worker 18. a former governor 19. an earlier manager 20. an earlier champion The prefix ex- means former or earlier, when it is separated from the base word by a hyphen. For example, an ex-member of a club is a former member. Write a word with the ex-prefix that means the following. The Prefix ex- excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

6. Write the Core Words that fit the descriptions. 1-3. Three words that have more than two syllables 4-9. Six words that contain the blends tr, nd, pr. or cl Say and Sound excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

7. Write the Core Words that complete the signs. Be sure to use capital letters where needed. Stop, Look and Write excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

8. To alphabetize a group of words, you must sometimes look at the second, third, or fourth letters in a word. Write the Core Words in the order they would appear in the dictionary. 16-19. expensive, express, expand, expert 20-21. extend, extreme 22-24. examine, exact, example 25-27. explore, explain, explode Use the Dictionary excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

9. It is interesting to learn about new things. Write a thank-you letter to someone who explained something exciting to you. You might tell about a talk that you heard or a place that you visited. Use at least four Core Words from this lesson in your paragraph. excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit

10. Here is a draft of one student’s letter. Find four misspelled words and write them correctly. excuse extend exclude exact exclaim express expand examine expert extreme expensive explore explain example explode exhaust excellent excavate extinct exhibit