- Chen wrote about Earth science weather. He wrote: "Water comes down from the sky. Sometimes it is the cold kind, and sometimes it is the wet kind. The air changes and makes it happen. This is part of weather." Which words should Chen replace with domain-specific vocabulary?
Answer: Replace "water comes down" with precipitation and "air" with atmosphere.
This question tests 4th grade informational/explanatory writing skills: using precise language and domain-specific vocabulary to inform about or explain the topic (CCSS.W.4.2.d). Informational and explanatory writing should use precise language and domain-specific vocabulary—this means using technical terms appropriate to the subject area instead of vague, everyday words; domain-specific vocabulary includes technical terms from the subject like science (habitat, adaptation, metamorphosis, predator, prey, evaporation, condensation, friction, orbit, precipitation), social studies (hemisphere, representative, peninsula, primary source, citizen, democracy), or math (perimeter, numerator, variable, parallel); precise vs vague: precise = 'The carnivore hunts prey in its habitat' (technical terms: carnivore, prey, habitat make meaning clear); vague = 'The animal that eats meat finds food where it lives' (everyday words, less precise); precise = 'Evaporation occurs when liquid water becomes water vapor' (technical: evaporation, liquid, water vapor); vague = 'Water goes up into the air when it gets hot' (general words); why it matters: domain vocabulary makes explanations clearer and more accurate, shows understanding of subject, provides specific, exact meaning, and is standard in each field (scientists say 'evaporation' not 'water going up'); using precise, subject-specific language is important in informational writing to communicate accurately. Chen writes about weather in Earth science; the explanation uses vague, everyday language such as 'water comes down,' 'cold kind,' 'wet kind,' and 'air' instead of domain vocabulary; if precise: list specific domain vocabulary like 'precipitation' and 'atmosphere' that should be used correctly. Choice A is correct because Chen could make language more precise by replacing 'water comes down' with 'precipitation' and 'air' with 'atmosphere' because the technical terms are more accurate and clear for science writing. Choice B is incorrect because it confuses subject areas (identifies science terms for social studies topic); students sometimes confuse subject areas and use technical terms from the wrong field. To help students use precise language and domain-specific vocabulary: build domain vocabulary explicitly for each subject unit; create word walls with science terms, social studies terms, math terms—display with definitions; teach technical terms directly before writing: 'When explaining water cycle, use these precise terms: evaporation (liquid→vapor), condensation (vapor→liquid), precipitation (water falling)—not vague words like "water goes up" or "water comes down"'; model replacing vague with precise: 'I wrote "The animal lives in a place." Too vague! Replace: "The arctic fox inhabits the tundra habitat." Now I used domain vocabulary: inhabits, tundra, habitat.'; practice precision substitutions: give sentences with vague language, students replace with domain terms ('The rock formed from hot stuff' → 'The igneous rock formed from cooled lava'). Emphasize precision purpose: 'Domain vocabulary makes your explanation clearer; "evaporation" tells exactly what happens—"water going up" is vague'; compare vague vs precise examples side-by-side; teach subject-appropriate terms: science topics need science vocabulary, social studies topics need social studies terms; provide vocabulary banks during writing; give feedback: 'Replace "stuff" with domain vocabulary: "adaptations"' or 'Use precise term "hemisphere" instead of "half of Earth"'; practice reading informational text, identify domain vocabulary authors use; teach correct usage: 'Predator hunts prey, not reversed; predator is the hunter, prey is hunted'; encourage defining terms: 'Metamorphosis—the transformation from larva to adult—takes weeks'; watch for: students who use vague words like 'stuff,' 'things,' 'place' instead of technical terms; students who avoid domain vocabulary because unfamiliar; students who use everyday language ('water going up') instead of technical terms ('evaporation'); students who mix precise and vague in same writing; students who use technical terms incorrectly; students who don't understand that domain vocabulary varies by subject; students who think any descriptive word is precise; students who don't define technical terms when introducing them; teach explicitly: informational writing uses subject-specific vocabulary to be clear and accurate.
- Look at Sofia's geography writing about landforms. She wrote: "A peninsula is land sticking out with water around it." What is the problem with her precise language?
Answer: She used a vague phrase instead of a precise one that fits this landform.
Sofia does use one strong geography term, "peninsula," but then she explains it with vague, everyday words: "sticking out with water around it." In informational writing, you want precise, subject-specific language, like "surrounded by water on three sides." That exact wording tells a reader clearly what a peninsula is, so the vague phrase is the real problem here.
Saying she used too many geography terms is wrong, because her sentence actually has only one geography term and plenty of vague words, not too many technical ones. Telling her to take out "peninsula" is also wrong, since "peninsula" is exactly the kind of precise geography term she should keep. Focusing on commas and spelling misses the point too, because the stem asks about her word choice, not her punctuation. The one thing she needs to fix is trading the fuzzy description for exact, subject-specific words.
- Read Amir's life science writing about a food chain. He wrote: "The prey hunts the predator for food in its habitat." What is wrong with his technical terms?
Answer: He reversed predator and prey; predators hunt prey, not the other way.
This question tests 4th grade informational/explanatory writing skills: using precise language and domain-specific vocabulary to inform about or explain the topic (CCSS.W.4.2.d). Informational and explanatory writing should use precise language and domain-specific vocabulary—this means using technical terms appropriate to the subject area instead of vague, everyday words. Domain-specific vocabulary = technical terms from the subject: Science (habitat, adaptation, metamorphosis, predator, prey, evaporation, condensation, friction, orbit, precipitation); Social Studies (hemisphere, representative, peninsula, primary source, citizen, democracy); Math (perimeter, numerator, variable, parallel). Precise vs vague: Precise = 'The carnivore hunts prey in its habitat' (technical terms: carnivore, prey, habitat make meaning clear); Vague = 'The animal that eats meat finds food where it lives' (everyday words, less precise). Precise = 'Evaporation occurs when liquid water becomes water vapor' (technical: evaporation, liquid, water vapor); Vague = 'Water goes up into the air when it gets hot' (general words). Why it matters: Domain vocabulary makes explanations clearer and more accurate; shows understanding of subject; provides specific, exact meaning; is standard in each field (scientists say 'evaporation' not 'water going up'). Using precise, subject-specific language is important in informational writing to communicate accurately. Amir writes about a food chain in science (life science). The explanation uses precise language and domain-specific vocabulary such as 'predator,' 'prey,' and 'habitat' which are appropriate technical terms for science but reverses 'predator' and 'prey.' Choice B is correct because Amir uses domain vocabulary like 'predator' and 'prey' but incorrectly, as predators hunt prey, not the other way around, which makes the explanation inaccurate for this science topic. Choice A is incorrect because it doesn't notice technical term is used incorrectly; students sometimes use technical terms incorrectly. To help students use precise language and domain-specific vocabulary: Build domain vocabulary explicitly for each subject unit; create word walls with science terms, social studies terms, math terms—display with definitions; teach technical terms directly before writing: 'When explaining water cycle, use these precise terms: evaporation (liquid→vapor), condensation (vapor→liquid), precipitation (water falling)—not vague words like "water goes up" or "water comes down"'; model replacing vague with precise: 'I wrote "The animal lives in a place." Too vague! Replace: "The arctic fox inhabits the tundra habitat." Now I used domain vocabulary: inhabits, tundra, habitat.'; practice precision substitutions: give sentences with vague language, students replace with domain terms ('The rock formed from hot stuff' → 'The igneous rock formed from cooled lava'); use frayer model for vocabulary: term in center, definition, characteristics, examples, non-examples; require vocabulary use in writing: 'Your explanation must include these domain terms: habitat, adaptation, predator, prey.'. Emphasize precision purpose: 'Domain vocabulary makes your explanation clearer. "Evaporation" tells exactly what happens—"water going up" is vague.'; compare vague vs precise examples side-by-side; teach subject-appropriate terms: science topics need science vocabulary, social studies topics need social studies terms; provide vocabulary banks during writing; give feedback: 'Replace "stuff" with domain vocabulary: "adaptations."' or 'Use precise term "hemisphere" instead of "half of Earth"'; practice reading informational text, identify domain vocabulary authors use; teach correct usage: 'Predator hunts prey, not reversed. Predator is the hunter, prey is hunted.'; encourage defining terms: 'Metamorphosis—the transformation from larva to adult—takes weeks'. Watch for: students who use vague words like 'stuff,' 'things,' 'place' instead of technical terms; students who avoid domain vocabulary because unfamiliar; students who use everyday language ('water going up') instead of technical terms ('evaporation'). Common pitfall: students who mix precise and vague in same writing; students who use technical terms incorrectly; students who don't understand that domain vocabulary varies by subject; students who think any descriptive word is precise; students who don't define technical terms when introducing them; teach explicitly: informational writing uses subject-specific vocabulary to be clear and accurate.
- Read Chen's earth science explanation about rocks. He wrote: "Metamorphic rock forms when rock melts and cools." Does Chen use accurate, domain-specific vocabulary?
Answer: No; metamorphic rock forms from heat and pressure, not from melting and then cooling down.
Chen uses the technical term "metamorphic rock," but he describes it incorrectly. Metamorphic rock forms from heat and pressure, so saying it "forms from heat and pressure" is the accurate, domain-specific answer. Using a subject-specific word the right way is what makes writing precise. The choice claiming "melts and cools" is correct is wrong because that describes how igneous rock forms, not metamorphic rock. The choice saying melting and cooling terms fit metamorphic rock "too" is wrong for the same reason: those words belong to igneous rock, not metamorphic. The choice saying melting and cooling describe sediment layers pressing together is also wrong, because pressing layers together describes sedimentary rock, not melting and cooling. Only one answer names the correct process for metamorphic rock: heat and pressure.
- Marcus is writing a civics explanation about how people pick their leaders. Which list shows the domain-specific words he should use for this social studies topic?
Answer: democracy, citizens, election, ballot, representatives
The best answer is "democracy, citizens, election, ballot, representatives." These are precise, subject-specific words used in civics and social studies. They name exact ideas about how a government works, so they make the explanation clear and accurate. The list with "deciding, everybody, fairness, choices, important people" uses only everyday words. They talk about the same topic, but they are vague instead of technical, so they are not domain-specific vocabulary. The list with "mountain, climate, peninsula, continent, hemisphere" holds real geography terms, but they belong to a different social studies topic and do not fit an explanation about voting. The list with "really, truly, nicely, helpful, interesting" is made of general describing words that fit almost any writing and name no civics idea at all. Remember: domain-specific words are the exact terms a subject uses, not everyday words or words borrowed from another topic.
- Look at Jamal's life science writing about Arctic foxes. He wrote: "The fox has special stuff to help it live in cold places. Its fur is really warm, and it can hide in the snow. It finds food and stays safe from bigger animals." What is the problem with Jamal's vocabulary?
Answer: It uses vague words like "stuff" instead of precise terms like habitat and adaptation.
The best answer is that Jamal uses vague words like "stuff" instead of precise terms like habitat and adaptation. In science writing, you want exact, subject-specific words so readers know exactly what you mean. Words like "stuff," "cold places," and "bigger animals" are everyday words that are too general for a report on Arctic foxes.
Saying Jamal already uses precise terms like adaptation and camouflage is wrong—read the sample, and you will see he never uses those words. That is exactly what his writing is missing.
Saying he uses too many math terms is also wrong. Words like perimeter and numerator belong to math, but Jamal's passage doesn't use any math terms at all.
Saying the problem is punctuation errors misses the question. The question asks about vocabulary, not punctuation, and his sentences are actually punctuated correctly. The real issue is his word choice, not his periods and commas.
- Read Emma's science explanation about the water cycle. How could she make vocabulary more precise? Emma wrote: "Water goes up when it gets hot. It makes clouds, then water comes down."
Answer: Replace "goes up" with evaporation and "comes down" with precipitation for precise vocabulary.
Emma is writing about science, so she should use exact science words instead of everyday phrases. Replacing "goes up" with evaporation and "comes down" with precipitation names the real processes scientists use, making her explanation clear and accurate. That is the best answer.
Keeping "goes up" and "comes down" is wrong because those are vague, everyday phrases, not scientific terms—the whole point is to make them more precise.
Replacing "clouds" with condensation and "gets hot" with steam is tempting, but it mislabels the parts: clouds form from condensation, they aren't the process itself, and "steam" doesn't explain heating. This swaps in science-sounding words in the wrong places, so it isn't more accurate.
Replacing "water" with "big drops" and "hot" with "nice" just adds vague describing words. "Nice" and "big drops" are not precise science vocabulary and don't name any water-cycle process, so this makes the writing less exact, not more.
- Look at Jamal's life science writing about Arctic foxes. He wrote: "The fox has special stuff to help it live in cold places. Its fur is really warm, and it can hide in the snow. It finds food and stays safe from bigger animals." What is the problem with Jamal's vocabulary?
Answer: It uses vague, everyday words like stuff and cold places instead of precise science terms like habitat and adaptation.
The best answer is that Jamal uses vague, everyday words like "stuff" and "cold places" instead of precise science terms such as habitat and adaptation. In science writing, exact terms make your explanation clear and accurate, and Jamal's passage is missing them. The choice saying his writing already uses precise terms like adaptation and camouflage is wrong—read the passage and you will not find those words at all. The choice saying he repeats science terms too many times is also wrong, since he never uses terms like predator or habitat even once; his problem is the opposite. The choice about the sentences being too short misses the real issue: the question asks about his vocabulary, not sentence length, and short sentences can still use precise words. Only one choice correctly names the vocabulary problem: everyday words where science terms belong.
- Read Jamal's life science explanation about Arctic fox survival. Does he use precise, domain-specific vocabulary? Jamal wrote: "The fox has special stuff to help it live in cold places. It hides in the snow and finds food."
Answer: No, because he uses vague words like "stuff" instead of terms like adaptation or camouflage.
The best answer is that Jamal does NOT use precise, domain-specific vocabulary because he uses vague, everyday words like "stuff" and "cold places" instead of science terms like adaptation, habitat, or camouflage. Precise vocabulary tells your reader exactly what helps the fox survive. Saying the fox has "special stuff" is fuzzy, but "adaptations like thick fur and white camouflage" gives an exact, scientific meaning. The choice claiming "special stuff" and "cold places" are exact science terms is wrong, because those are general words anyone uses, not technical terms from life science. The choice saying "hides," "snow," and "food" are the precise terms this topic needs is also wrong, because those everyday words describe the fox but still don't name scientific ideas like predator, prey, or habitat. The choice blaming short sentences is wrong too, because precision comes from choosing exact, subject-specific words, not from writing longer sentences. When you explain a science topic, swap vague words for domain vocabulary so your meaning is clear and accurate.
- Read Carlos's Earth science explanation about weather. Which version uses more precise, domain-specific language?
Answer: Precipitation includes rain, snow, sleet, and hail that fall down from the clouds.
The best answer uses exact science words: "precipitation" names the weather process, and "rain, snow, sleet, and hail" lists the specific forms it can take. These are the kinds of terms scientists use to explain weather clearly. The choice about water falling down when the sky gets full uses everyday words like "falls down" and "very wet" instead of a technical term. The one saying water turns into clouds and comes back down describes the idea in general words but never names the actual process. The choice about wet weather starting up high and landing on the ground also uses vague, everyday language with no science vocabulary. Only one version replaces plain words with precise, domain-specific terms, so it is the strongest science explanation.
- Look at Maya's math explanation about fractions. Maya wrote: "In a fraction, the numerator is the number above the bar, and the denominator is below." Which sentence best shows precise math vocabulary?
Answer: A fraction has a numerator and a denominator that show parts of a whole.
The best answer names the exact math words a mathematician would use: it says a fraction has a numerator and a denominator. These precise, subject-specific terms make the explanation clear and accurate, just like Maya's own writing.
The choice that says a top number and a bottom number shows equal pieces uses everyday words instead of the precise math terms numerator and denominator, so it is less exact for math writing.
The choice about a big number and a small number is even less precise, and it is also wrong—the top or bottom number can be either larger or smaller.
The choice about some numbers and a line that stand for a part of things is the vaguest of all, using general words like 'things' instead of any real math vocabulary.
When you explain math, use the true math terms—numerator and denominator—so everyone understands exactly what you mean.
- Read Emma's Earth science explanation about Earth's movement. Which version uses more precise, domain-specific vocabulary? Version 1: "Earth spins and goes around the sun." Version 2: "Earth rotates on its axis and revolves in an orbit around the Sun."
Answer: Version 2; it uses precise terms like rotates, revolves, axis, and orbit.
The best answer is the version that uses precise terms like rotates, revolves, axis, and orbit. In science writing, you should use exact, subject-specific words instead of everyday ones. "Rotates" and "revolves" name two different motions, and "axis" and "orbit" tell exactly how Earth moves. That makes the explanation clear and accurate. The choice saying spins, goes, around, and sun are technical is wrong because those are common, everyday words, not science terms. The choice claiming shorter, simpler words must be most precise is wrong because word length has nothing to do with precision—short everyday words are actually vaguer. The choice saying neither version needs science vocabulary is wrong because explaining a science topic clearly does require exact scientific words, which is the whole point of precise, domain-specific vocabulary.
- Read Maya's Earth science explanation about weather. Which words should she replace with domain-specific vocabulary?
Maya wrote: "Water comes down from the sky. It can be rain or snow. This happens when clouds get full."
Answer: Replace "water comes down" with precipitation and "sky" with atmosphere.
This question tests 4th grade informational/explanatory writing skills: using precise language and domain-specific vocabulary to inform about or explain the topic (CCSS.W.4.2.d). Informational and explanatory writing should use PRECISE LANGUAGE and DOMAIN-SPECIFIC VOCABULARY—this means using technical terms appropriate to the subject area instead of vague, everyday words. Maya writes about weather in Earth science. The explanation uses vague, everyday language such as "water comes down" and "sky" instead of domain vocabulary. Choice A is correct because Maya should replace "water comes down" with "precipitation" and "sky" with "atmosphere" because these technical terms are more accurate and clear for Earth science writing. Choice B is incorrect because it suggests replacing the precise term "rain" with the vague phrase "wet drops," which would make the writing less scientific, not more. To help students use precise language and domain-specific vocabulary: Create word walls with Earth science terms: precipitation, atmosphere, condensation; teach technical terms directly: "When explaining weather, use 'precipitation' not 'water comes down,' use 'atmosphere' not 'sky'"; compare vague vs precise examples side-by-side. Watch for students who use everyday language ("water comes down") instead of technical terms ("precipitation").
- Read Keisha's history explanation. How could she make it more precise? Keisha wrote: "We learned from old things and papers from long ago."
Answer: Replace "old things" with "artifacts" and "papers" with "primary sources," the exact terms historians use.
Keisha is explaining history, so she should use the precise terms that historians actually use. Objects from the past are called "artifacts," and original records from the time period are called "primary sources." These words tell readers exactly what kind of evidence she used, so replacing "old things" and "papers" with them is the best choice.
Changing "long ago" to "the olden days" and "learned" to "found out" only swaps one vague phrase for another vague phrase—neither is a precise history term. Changing "old things" to "antiques" and "papers" to "letters" makes the words sound fancier, but "antiques" means things people collect at home and "letters" is too narrow to name all the records historians study, so these are not the right domain terms. Keeping "old things" and "papers" is wrong because everyday words are usually less clear, not more clear; subject-specific terms make an explanation more precise. Only the artifacts-and-primary-sources choice gives Keisha the accurate history vocabulary she needs.
- Read Marcus's history explanation about sources. Which domain-specific words does he use? Marcus wrote: "A primary source is a diary from the time. A secondary source is a textbook written later."
Answer: primary source, secondary source
The best answer is "primary source, secondary source." These are the exact technical terms historians use to describe two kinds of evidence, so they make Marcus's explanation clear and precise. A primary source is an original record from the time, and a secondary source is a later account. "Old writing, later story" only describes the examples in everyday words instead of naming the technical history terms. "Important paper, true report" sounds serious but uses general words that any subject could use, not special history vocabulary. "History book, from long ago" names an example and a time phrase, but those are ordinary words, not the precise terms historians rely on. Remember: examples like "diary" or "textbook" show what a source is, but the domain-specific words are the exact terms "primary source" and "secondary source."
- Read Marcus's life science explanation about food chains. What is the problem with his technical terms? Marcus wrote: "In a food chain, the prey hunts the predator. Then the predator gets eaten by plants. This shows how energy moves in an ecosystem. Each organism has a role."
Answer: He uses technical terms, but he uses predator and prey incorrectly.
The best answer is that Marcus uses technical terms but mixes up predator and prey. In a real food chain, the predator is the hunter and the prey is hunted—so the predator hunts the prey, not the other way around. Marcus also says the predator gets eaten by plants, which does not happen in a normal food chain. Using science words the wrong way is confusing, so this is the true problem.
Saying he forgets to explain ecosystem is wrong because the problem is not a missing definition—it is that he reverses predator and prey. Saying he should swap ecosystem for place is wrong because ecosystem is the precise, correct science word; changing it to place would make his writing less exact, not better. Saying he should drop energy because it belongs only in math is wrong because energy is an important science word that correctly describes how food chains work. The one real mistake is using predator and prey backward.
- Carlos wrote a math explanation about fractions. He wrote: "In a fraction, the numerator shows how many parts are chosen. The denominator shows how many equal parts are in the whole. For 83, 3 is the numerator and 8 is the denominator. This vocabulary helps explain fractions clearly." Does Carlos use precise, domain-specific vocabulary? Why?
Answer: Yes; he uses numerator and denominator accurately for a math explanation.
Carlos is writing about math, so he should use the exact math words that name the parts of a fraction. The best answer says yes because numerator and denominator are the correct math terms, and he uses them accurately to explain what each number in 3/8 means. The choice that says to switch to "top number" and "bottom number" is wrong: those everyday words are vaguer, not more precise, and they hide the real math vocabulary. The choice saying a math explanation needs only numbers and no vocabulary is wrong because clear explaining takes precise words along with the numbers. The choice claiming any everyday number word counts as domain-specific vocabulary in every subject is wrong because domain-specific vocabulary means special subject terms like numerator and denominator, not ordinary words that fit anywhere. So Carlos does use precise, subject-specific words correctly.
- Look at Jamal's physical science writing about forces. Jamal wrote: "Friction is a force that opposes motion and can create heat when surfaces rub." Does Jamal use precise, domain-specific vocabulary?
Answer: Yes, because he uses exact science terms like "friction" and "force" that fit physical science.
The best answer is that Jamal uses exact science terms like "friction" and "force" that fit physical science. These words name the concept precisely and match the topic he is writing about, so his vocabulary is domain-specific. The choice saying he uses only general words like "stuff" and "things" is wrong because Jamal never uses vague words—he uses real science terms instead. The choice about habitats and adaptations is wrong because those are life-science words about animals and plants, not the right terms for forces and motion in physical science. The choice about neat spelling and strong punctuation is wrong because spelling and punctuation are about how a sentence looks, not about whether the words are precise, subject-specific science terms. To decide, ask whether the writer picks exact words that belong to the subject—that is what makes vocabulary domain-specific.
- Read Sofia's physical science explanation about motion. She wrote: "A force can change an object's motion. Friction is the rubbing that slows motion on rough surfaces. Gravity pulls objects toward Earth. These forces can make objects speed up or stop." Does Sofia use precise, domain-specific vocabulary? Why?
Answer: Yes; she uses technical terms like force, motion, friction, and gravity accurately.
This question tests 4th grade informational/explanatory writing skills: using precise language and domain-specific vocabulary to inform about or explain the topic (CCSS.W.4.2.d). Informational and explanatory writing should use precise language and domain-specific vocabulary—this means using technical terms appropriate to the subject area instead of vague, everyday words; domain-specific vocabulary includes technical terms from the subject like science (habitat, adaptation, metamorphosis, predator, prey, evaporation, condensation, friction, orbit, precipitation), social studies (hemisphere, representative, peninsula, primary source, citizen, democracy), or math (perimeter, numerator, variable, parallel); precise vs vague: precise = 'The carnivore hunts prey in its habitat' (technical terms: carnivore, prey, habitat make meaning clear); vague = 'The animal that eats meat finds food where it lives' (everyday words, less precise); precise = 'Evaporation occurs when liquid water becomes water vapor' (technical: evaporation, liquid, water vapor); vague = 'Water goes up into the air when it gets hot' (general words); why it matters: domain vocabulary makes explanations clearer and more accurate, shows understanding of subject, provides specific, exact meaning, and is standard in each field (scientists say 'evaporation' not 'water going up'); using precise, subject-specific language is important in informational writing to communicate accurately. Sofia writes about motion in physical science; the explanation uses precise language and domain-specific vocabulary such as 'force,' 'motion,' 'friction,' and 'gravity' which are appropriate technical terms for science. Choice A is correct because Sofia uses precise language and domain-specific vocabulary—technical terms like 'force,' 'motion,' 'friction,' and 'gravity' are appropriate for science and make the explanation clear and accurate. Choice B is incorrect because it doesn't recognize that domain vocabulary like 'friction' is present in the writing; students sometimes don't know or avoid subject-specific vocabulary. To help students use precise language and domain-specific vocabulary: build domain vocabulary explicitly for each subject unit; create word walls with science terms, social studies terms, math terms—display with definitions; teach technical terms directly before writing: 'When explaining water cycle, use these precise terms: evaporation (liquid→vapor), condensation (vapor→liquid), precipitation (water falling)—not vague words like "water goes up" or "water comes down"'; model replacing vague with precise: 'I wrote "The animal lives in a place." Too vague! Replace: "The arctic fox inhabits the tundra habitat." Now I used domain vocabulary: inhabits, tundra, habitat.'; practice precision substitutions: give sentences with vague language, students replace with domain terms ('The rock formed from hot stuff' → 'The igneous rock formed from cooled lava'). Emphasize precision purpose: 'Domain vocabulary makes your explanation clearer; "evaporation" tells exactly what happens—"water going up" is vague'; compare vague vs precise examples side-by-side; teach subject-appropriate terms: science topics need science vocabulary, social studies topics need social studies terms; provide vocabulary banks during writing; give feedback: 'Replace "stuff" with domain vocabulary: "adaptations"' or 'Use precise term "hemisphere" instead of "half of Earth"'; practice reading informational text, identify domain vocabulary authors use; teach correct usage: 'Predator hunts prey, not reversed; predator is the hunter, prey is hunted'; encourage defining terms: 'Metamorphosis—the transformation from larva to adult—takes weeks'; watch for: students who use vague words like 'stuff,' 'things,' 'place' instead of technical terms; students who avoid domain vocabulary because unfamiliar; students who use everyday language ('water going up') instead of technical terms ('evaporation'); students who mix precise and vague in same writing; students who use technical terms incorrectly; students who don't understand that domain vocabulary varies by subject; students who think any descriptive word is precise; students who don't define technical terms when introducing them; teach explicitly: informational writing uses subject-specific vocabulary to be clear and accurate.
- Read Emma's science explanation about the water cycle. She wrote: "Water heats up and evaporation turns liquid water into water vapor. Then condensation forms clouds when the vapor cools. Finally, precipitation falls as rain or snow. This cycle repeats in Earth's atmosphere." Which group lists only the domain-specific words Emma uses?
Answer: evaporation, condensation, precipitation, atmosphere
The best answer is "evaporation, condensation, precipitation, atmosphere." These are all technical science words Emma actually wrote, and each one names an exact part of the water cycle instead of using everyday language. The list "temperature, molecule, gravity, environment" is full of real science words, but these are the wrong choice because Emma never wrote any of them—read the passage and you will not find them. The list "heats up, turns, repeats, water going up" uses only everyday, vague language like "heats up" instead of a precise term like "evaporation," so these are not domain-specific words. The list "cycle, liquid, clouds, rain and snow" does appear in the passage, but these are common, general words anyone might use—only "liquid" is somewhat scientific, so the group as a whole is not made of true domain-specific terms. Domain-specific words are the exact technical terms a scientist would use to make an explanation clear and accurate.
