Join Two Words to Make Compound Words
Written by Adi Ackerman, Head Teacher
"Join Two Words to Make Compound Words" is written for 4th Grade (Ages 9-10). If your little one is a year younger but already steady on prefixes & suffixes, the page still works. You may just need to read the instructions out loud. And if they are older and compound words never quite stuck, this is a short review rather than busywork.


4th grade vocabulary worksheet: join words from two boxes into 10 compound words like rainbow and toothpaste, then write 2 sentences. Answer key included. Part of our compound words prefixes & suffixes collection.
How do I use this worksheet?
Before each page, say a compound word like backpack and have your child clap once for each part. On the meaning page, ask whether the parts really tell what the word means. Check with the answer key, which shows sample answers where wording can vary.
What students will practice
- Students will join a word from Box A with a word from Box B to make 10 compound words.
- Students will build words like watermelon, earthquake and lighthouse using each word once.
- Students will write 2 sentences that each use one of the compound words they made.
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FAQ
How do I use this compound words worksheet?
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Before each page, say a compound word like backpack and have your child clap once for each part. On the meaning page, ask whether the parts really tell what the word means. Check with the answer key, which shows sample answers where wording can vary.
What does this worksheet teach?
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Join words from two boxes into 10 compound words like rainbow and toothpaste, then write 2 sentences. A compound word is two smaller words joined to make one new word, as in sun + flower = sunflower. The directions on the page read: Join a word from Box A with a word from Box B to make 10 compound words. Use each word once. Then, write 2 sentences. An answer key is included.
Can I use this compound words worksheet for homeschool or classroom?
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Yes, both. We made it for 4th Grade prefixes & suffixes, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with compound words. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.
How can my child tell if a word is a compound word?
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Look for two smaller words that each stand on their own, like class and room in classroom. If both parts are real words and together they make one word, it is a compound word. The sentence and story pages practice spotting them inside longer text.
What does it mean when the meaning is new?
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Some compound words do not mean what their parts say. A bookworm is a person who loves to read, not a worm, and a pineapple is not a pine or an apple. The snow day story page has children sort 14 words into these two groups.
How can we practice compound words away from the page?
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Take turns naming a word like sun or snow and listing every compound word you can make with it, such as sunset, sunrise and snowflake. The word web page uses this same game.
What is a compound word?
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A compound word is two smaller words joined into one new word, like foot + print = footprint. In many compound words, like raincoat and mailbox, the parts tell the meaning. In others, like pineapple and butterfly, the new word means something the parts do not say.
Why do 4th graders still practice compound words?
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Long compound words like thunderstorms, grassland and brainstorm show up often in 4th grade reading. Splitting a long word into two known words is a quick way to read it and guess its meaning, and the meaning and clue pages practice that step on its own.
In what order should my child use these sheets?
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Start with Circle the Compound Words in Each Sentence, then the snow day story. Next, join words on the Join Two Words page and the word webs. Finish with the meaning page and the clue page, which ask your child to explain words and build them from their parts.
Is there an answer key for each worksheet?
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Yes. All 6 compound words sheets have an answer key. Pages where your child writes sentences or meanings show sample answers, since wording can vary.
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Worksheet Details
| Grade | 4th Grade |
| Subject | Grammar & Writing |
| Topic | Prefixes & Suffixes |
| Pages | 1 page |
| Difficulty | Medium |
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