English Language Arts
Grade 4
15 min
Form and use compound words
Form and use compound words
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1
Introduction & Learning Objectives
Learning Objectives
Define what a compound word is and provide examples.
Identify the two smaller words (root words) that make up a closed compound word.
Form new compound words by combining two individual words.
Use the meanings of the two smaller words to infer the meaning of the new compound word.
Correctly use compound words in their own original sentences.
Spell common compound words correctly without adding extra spaces or dropping letters.
What do a starfish ⭐ and a pancake 🥞 have in common? They are both secret 'super words' made by combining two smaller words!
In this lesson, you will become a word detective! We will learn how to spot, build, and use compound words. Mastering this skill will help you understand bigger words when you read and make your o...
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Key Concepts & Vocabulary
TermDefinitionExample
Compound WordA single, new word that is formed by joining two smaller, separate words together.The word 'sun' plus the word 'flower' creates the compound word 'sunflower'.
Root WordsThe two individual words that are combined to create a compound word.In the word 'basketball', the root words are 'basket' and 'ball'.
Closed Compound WordA compound word where the two root words are joined together without any space or hyphen.The word 'notebook' is a closed compound word. 'Note' and 'book' are stuck together.
Open Compound WordA compound word where the two root words are not joined together, but they work as a single idea.The words 'ice cream' are an open compound word. We...
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Key Rules & Conventions
The Combination Formula
Word 1 + Word 2 = Compound Word
To form a compound word, you simply place two existing words next to each other to create a new word with a new, related meaning. For example, 'foot' + 'ball' = 'football'.
The No-Change Spelling Rule
Keep all the letters from both root words.
When you combine two words to make a closed compound word, you do not drop any letters. If the first word is 'pan' and the second is 'cake', the new word is 'pancake', keeping all the original letters.
The Meaning Connection Rule
The new meaning is connected to the old meanings.
The meaning of the compound word is usually a combination of the meanings of the two root words. A 'doghouse' is a house for a...
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Challenging
A student combines 'class' and 'room' but writes 'clasroom'. Which rule or pitfall from the tutorial did they forget?
A.The Meaning Connection Rule, because the meaning is wrong.
B.The No-Change Spelling Rule, because they dropped a letter.
C.The Combination Formula, because they subtracted instead of added.
D.The Unnecessary Space pitfall, because they added a space.
Challenging
Both 'houseboat' and 'boathouse' are real compound words. How does changing the order of the root words 'boat' and 'house' change the main idea of the word?
A.The second word describes the main object; a 'houseboat' is a type of boat, and a 'boathouse' is a type of house.
B.The first word is always the most important; a 'houseboat' is mainly a house, and a 'boathouse' is mainly a boat.
C.Changing the order of the root words does not change the meaning.
D.One word is for fresh water and the other is for salt water.
Challenging
Read the sentence: 'The firefighter used a special tool to rescue the cat.' Which key concept BEST explains why 'firefighter' is written as one word instead of 'fire fighter'?
A.The Meaning Clue
B.The Literal Meaning Trap
C.It is a Closed Compound Word
D.It is an Open Compound Word
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