This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'happy' which means glad. The unknown word 'unhappy' contains this root, so we can use what we know about 'happy' to figure out 'unhappy'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'friend' means a person you like and trust, you can figure out that 'friendly' means acting like a friend. The word 'unhappy' breaks into parts: un + happy. The root 'happy' means glad which we know from 'happy'. The prefix 'un' means not. Putting these together: not + glad = not glad; sad. Choice C is correct because it properly uses the root meaning and the prefix. Since 'happy' means glad, and 'un' means not, 'unhappy' means not glad; sad. This shows the connection between words in the same family. Choice B is incorrect because it ignores the prefix and only gives a variation of the root meaning. Students make this error when they don't apply the prefix meaning or treat the word as completely new. To help students: Teach common root word families together (friend-friendly-friendship, help-helper-helpful, teach-teacher-teaching). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words. Examples: care (concern) → careful (full of concern) → careless (without concern) → caring (showing concern). Watch for: not recognizing shared roots / ignoring how affixes change meaning / treating every unknown word as completely new.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'play' which means have fun. The unknown word 'playground' contains this root, so we can use what we know about 'play' to figure out 'playground'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'friend' means a person you like, you can figure out that 'friendship' means the relationship between friends. The word 'playground' breaks into parts: play + ground. The root 'play' means have fun which we know from the given word. The word 'ground' means an area of land. Putting these together: have fun + area of land = an area of land for having fun. Choice A is correct because it properly uses the root meaning combined with 'ground'. Since 'play' means have fun, and ground means an area, 'playground' means a place to play or have fun. This shows the connection between words in the same family. Choice B is incorrect because it confuses 'playground' with 'player' - a person who plays would use the -er suffix, not the compound word ground. Students make this error when they don't recognize compound words and try to apply suffix rules instead. To help students: Teach common root word families together (play-player-playful-playground). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'write' which means put words on paper. The unknown word 'rewrite' contains this root, so we can use what we know about 'write' to figure out 'rewrite'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'play' means have fun, you can figure out that 'replay' means play again. The word 'rewrite' breaks into parts: re- + write. The root 'write' means put words on paper which we know from the given definition. The prefix 're-' means 'again' or 'back'. Putting these together: again + put words on paper = write again. Choice A is correct because it properly uses the root meaning and the re- prefix. Since 'write' means put words on paper, and re- means again, 'rewrite' means write again. This shows the connection between words in the same family. Choice C is incorrect because it confuses 'rewrite' with 'writer' (which would use the -er suffix for a person who writes). Students make this error when they don't carefully look at the prefix. To help students: Teach common root word families together (write-writer-writing-rewrite). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words. Examples: do (perform) → redo (do again) → undo (reverse what was done). Watch for: not recognizing shared roots / confusing different affixes / treating every unknown word as completely new.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'teach' which means show how. The unknown word 'teacher' contains this root, so we can use what we know about 'teach' to figure out 'teacher'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'help' means assist, you can figure out that 'helper' means a person who assists. The word 'teacher' breaks into parts: teach + -er. The root 'teach' means show how which we know from the given word. The suffix '-er' means 'a person who does something'. Putting these together: show how + person who does = a person who shows how. Choice A is correct because it properly uses the root meaning and the -er suffix. Since 'teach' means show how, and -er means a person who does something, 'teacher' means a person who teaches or shows how. This shows the connection between words in the same family. Choice B is incorrect because it describes a textbook or teaching material, not a person. Students make this error when they guess based on context (teachers use books) rather than using the root word clue. To help students: Teach common root word families together (teach-teacher-teaching). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'friend' which means someone you like. The unknown word 'friendly' contains this root, so we can use what we know about 'friend' to figure out 'friendly'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'help' means assist, you can figure out that 'helper' means a person who assists. The word 'friendly' breaks into parts: friend + -ly. The root 'friend' means someone you like which we know from the given word. The suffix '-ly' means 'in the manner of' or 'having the quality of'. Putting these together: someone you like + having the quality of = having the quality of a friend. Choice B is correct because it properly uses the root meaning and the -ly suffix. Since 'friend' means someone you like, and -ly means having the quality of, 'friendly' means acting like a friend or being kind. This shows the connection between words in the same family. Choice D is incorrect because it gives only the root meaning without considering the -ly suffix. Students make this error when they don't recognize that suffixes change the word's part of speech and meaning. To help students: Teach common root word families together (friend-friendly-friendship-unfriendly). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'happy' which means glad. The unknown word 'unhappy' contains this root, so we can use what we know about 'happy' to figure out 'unhappy'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'kind' means nice, you can figure out that 'unkind' means not nice. The word 'unhappy' breaks into parts: un + happy. The root 'happy' means glad which we know from the question. The prefix 'un' means not or the opposite of. Putting these together: not + glad = not happy or feeling sad. Choice C is correct because it properly uses the root meaning and prefix. Since 'happy' means glad, and 'un' means not, 'unhappy' means not happy or feeling sad. This shows the connection between words in the same family. Choice A is incorrect because it suggests 'unhappy' means more happy, which ignores that 'un' creates opposites. Students make this error when they don't understand negative prefixes. To help students: Teach common root word families together (happy-happiness-happily-unhappy). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with 'un' prefix: unfriendly (not friendly), unsafe (not safe), unclean (not clean). Watch for: missing that 'un' means not / thinking prefixes always add to meaning / not recognizing opposites.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'write' which means to put words on paper. The unknown word 'rewrite' contains this root, so we can use what we know about 'write' to figure out 'rewrite'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'friend' means a person you like and trust, you can figure out that 'friendly' means acting like a friend. The word 'rewrite' breaks into parts: re + write. The root 'write' means to put words on paper which we know from 'write'. The prefix 're' means again. Putting these together: again + to put words on paper = write again. Choice B is correct because it properly uses the root meaning and the prefix. Since 'write' means to put words on paper, and 're' means again, 'rewrite' means write again. This shows the connection between words in the same family. Choice A is incorrect because it confuses with a different root. Students make this error when they don't recognize the shared root. To help students: Teach common root word families together (friend-friendly-friendship, help-helper-helpful, teach-teacher-teaching). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words. Examples: care (concern) → careful (full of concern) → careless (without concern) → caring (showing concern). Watch for: not recognizing shared roots / ignoring how affixes change meaning / treating every unknown word as completely new.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'write' which means put words on paper. The unknown word 'rewrite' contains this root, so we can use what we know about 'write' to figure out 'rewrite'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'do' means perform an action, you can figure out that 'redo' means do again. The word 'rewrite' breaks into parts: re + write. The root 'write' means put words on paper which we know from the question. The prefix 're' means again or back. Putting these together: again + put words on paper = write again, typically to improve or change what was written. Choice A is correct because it properly uses the root meaning and prefix. Since 'write' means put words on paper, and 're' means again, 'rewrite' means write again to make it better or clearer. This shows the connection between words in the same family. Choice B is incorrect because it confuses 'rewrite' with 'writer' - it describes a person not an action. Students make this error when they don't recognize the specific prefix meaning. To help students: Teach common root word families together (write-writer-writing-rewrite). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with 're' prefix: redo (do again), replay (play again), reread (read again). Watch for: not recognizing 're' means again / confusing different words in family / missing prefix meanings.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'friend' which means a person you like and trust. The unknown word 'friendly' contains this root, so we can use what we know about 'friend' to figure out 'friendly'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'friend' means a person you like and trust, you can figure out that 'friendly' means acting like a friend. The word 'friendly' breaks into parts: friend + ly. The root 'friend' means a person you like and trust which we know from 'friend'. The suffix 'ly' means in the manner of. Putting these together: a person you like and trust + in the manner of = acting like a friend. Choice B is correct because it properly uses the root meaning and the suffix. Since 'friend' means a person you like and trust, and 'ly' means in the manner of, 'friendly' means acting like a friend; kind and nice. This shows the connection between words in the same family. Choice C is incorrect because it only gives the root meaning without considering the suffix. Students make this error when they don't recognize how the suffix changes the word to describe a way of acting. To help students: Teach common root word families together (friend-friendly-friendship, help-helper-helpful, teach-teacher-teaching). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words. Examples: care (concern) → careful (full of concern) → careless (without concern) → caring (showing concern). Watch for: not recognizing shared roots / ignoring how affixes change meaning / treating every unknown word as completely new.

This question tests using root words as clues to meaning (CCSS.L.3.4.c). The root word is 'friend' which means someone you like. The unknown word 'friendship' contains this root, so we can use what we know about 'friend' to figure out 'friendship'. A root word is the main part of a word that carries the basic meaning. Words that share the same root are related in meaning. When you know one word in a word family, you can use that knowledge to understand other words with the same root. For example, if you know 'member' means part of a group, you can figure out that 'membership' means the state of being a member. The word 'friendship' breaks into parts: friend + -ship. The root 'friend' means someone you like which we know from the given word. The suffix '-ship' means 'the state or condition of being' or 'the relationship of'. Putting these together: someone you like + the relationship of = the relationship of being friends. Choice A is correct because it properly uses the root meaning and the -ship suffix. Since 'friend' means someone you like, and -ship means the relationship or state of being, 'friendship' means the relationship of being friends. This shows the connection between words in the same family. Choice B is incorrect because it gives only the root meaning without considering the -ship suffix. Students make this error when they don't recognize that suffixes change the word's meaning from a person to a relationship or state. To help students: Teach common root word families together (friend-friendly-friendship-unfriendly). Strategy for unknown words: (1) Look for root you recognize. (2) Remember what that root means from word you know. (3) Look at any prefixes or suffixes. (4) Combine root meaning + affix meanings. Practice with word family charts showing how root appears in multiple related words.