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    My Word Book

    3rd Grade Vocabulary Words

    313 words from the year, A to Z.

    313 words

    A

    abstract nounELAFirst used: Week 5
    A noun that names an idea or feeling you cannot see or touch.
    Kindness and courage are abstract nouns.
    adaptationScienceFirst used: Week 11
    A body part or behavior that helps a living thing survive where it lives.
    A cactus's thick, waxy stem is an adaptation for living in a dry desert.
    adjectiveELAFirst used: Week 2
    A word that describes a noun.
    In "the brave knight," brave is an adjective.
    adverbELAFirst used: Week 2
    A word that tells how, when or where something happens.
    In "the cat crept slowly," slowly is an adverb.
    air pressureScienceFirst used: Week 25
    The push of air on everything around it.
    Falling air pressure can mean stormy weather is coming.
    An anemometer on a pole with three little cups that catch the wind and spin.anemometerScienceFirst used: Week 19
    A tool that measures how fast the wind is blowing.
    The cups on the anemometer spun fast in the strong wind.
    The opposite words hot and cold, shown with a sun and a snowflake joined by a two-way arrow.antonymELAFirst used: Week 22
    A word that means the opposite of another word.
    Hot and cold are antonyms.
    apostropheELAFirst used: Week 2
    A mark (') used in contractions and to show that something belongs to someone.
    The apostrophe in Maya's hat shows the hat belongs to Maya.
    A rectangle covered by 12 equal squares in 3 rows of 4, showing an area of 12 square units.areaMathFirst used: Week 28
    The amount of flat space a shape covers, measured in square units.
    The rug covers 3 rows of 4 squares, so its area is 12 square units.
    A dry desert with a cactus, a hot sun and cracked ground.aridScienceFirst used: Week 20
    Very dry, with little rain most years.
    An arid desert may get only a little rain in a whole year.
    Twelve circles arranged in an array of 3 equal rows and 4 equal columns.arrayMathFirst used: Week 4
    Objects arranged in equal rows and equal columns.
    An array of 3 rows of 5 stars shows 3 × 5 = 15.
    associative propertyMathFirst used: Week 13
    Changing how three factors are grouped does not change the product.
    (2 × 5) × 7 and 2 × (5 × 7) both equal 70.
    attractScienceFirst used: Week 4
    To pull toward.
    A magnet attracts a steel paper clip.
    author's purposeELAFirst used: Week 24
    The reason an author writes a text, such as to teach, entertain or persuade.
    The author's purpose in the bee article is to teach how bees make honey.

    B

    balanced forcesScienceFirst used: Week 2
    Forces that are equal in strength and push or pull in opposite directions.
    In a tied tug-of-war, the forces are balanced, so the rope does not move.
    A paper ballot with three choices, one marked with a check, and a pencil.ballotSocial StudiesFirst used: Week 22
    The paper or screen where a voter marks a choice.
    Each family member marked a secret ballot.
    bankSocial StudiesFirst used: Week 25
    A business that keeps people's money safe and makes loans.
    I put my birthday money in a savings account at the bank.
    A bar graph with four bars of different heights.bar graphMathFirst used: Week 35
    A graph that uses bars of different lengths to show and compare data.
    Our bar graph shows that soccer got the most votes.
    A round barometer dial with a needle pointing toward Fair.barometerScienceFirst used: Week 25
    A tool that measures air pressure.
    The barometer showed that the air pressure was dropping.
    base wordELAFirst used: Week 13
    A word that a prefix or suffix can be added to.
    The base word in unhappy is happy.
    behaviorScienceFirst used: Week 11
    Something a living thing does, like hunting at night or moving south for winter.
    Hiding in its shell is a behavior that keeps a turtle safe.
    billSocial StudiesFirst used: Week 20
    A written plan for a new law that lawmakers vote on.
    Congress voted on the bill.
    Bill of RightsSocial StudiesFirst used: Week 21
    The first ten amendments to the Constitution, which protect people's rights.
    The Bill of Rights protects freedom of speech.
    branch (of government)Social StudiesFirst used: Week 20
    One part of a government with its own job.
    The U.S. government has three branches.
    Three dogs of different breeds: one with floppy ears, one with pointed ears and one with curly fur.breedScienceFirst used: Week 30
    A group of animals in one species that people raised to have certain traits.
    Poodles and beagles are two breeds of dog.
    budgetSocial StudiesFirst used: Week 24
    A plan for how to spend and save money.
    My budget saves some money each week for a new book.

    C

    A flatfish with a pebble pattern lies on a pebbly sea floor, blending in with the stones around it.camouflageScienceFirst used: Week 14
    Colors or patterns that help an animal blend in with its surroundings.
    A green caterpillar's camouflage hides it on a leaf.
    capital resourceSocial StudiesFirst used: Week 25
    A tool or machine people make and use to produce goods or services.
    A baker's oven is a capital resource.
    captionELAFirst used: Week 6
    Words under a picture that tell what it shows.
    The caption under the photo told me the frog's name.
    cardinal directionsSocial StudiesFirst used: Week 3
    The four main directions: north, south, east and west.
    I used the cardinal directions to tell where the park is.
    cause and effectELAFirst used: Week 7
    How one event (the cause) makes another event (the effect) happen.
    The cause was heavy rain, and the effect was a muddy field.
    central messageELAFirst used: Week 1
    The big lesson or idea a story teaches.
    The central message of the fable is that slow and steady can win.
    characterELAFirst used: Week 1
    A person or animal in a story.
    The main character in my book is a brave mouse.
    character traitELAFirst used: Week 2
    A word that tells what a character is like on the inside.
    Kind and honest are character traits.
    cirrusScienceFirst used: Week 25
    Thin, wispy clouds high in the sky.
    Cirrus clouds look like white feathers.
    citizenSocial StudiesFirst used: Week 21
    A person who is a member of a country.
    U.S. citizens can vote when they turn 18.
    civic actionSocial StudiesFirst used: Week 33
    Working to help solve a problem in your community.
    Our civic action project made the playground cleaner.
    climateScienceFirst used: Week 20
    The usual weather of a place over many years.
    The climate in the Sonoran Desert is hot and dry.
    closed syllableELAFirst used: Week 1
    A syllable that ends with a consonant, so the vowel sound is short.
    Cap is a closed syllable, so the a is short.
    Honeybees crawl over the six-sided cells of a honeycomb where the colony lives together.colonyScienceFirst used: Week 13
    A large group of animals of the same kind that live together.
    Honeybees live in a colony with one queen.
    Dots arranged in a grid, with one up-and-down column circled.columnMathFirst used: Week 2
    A line of things that goes straight up and down.
    When I add, I line up the ones in one column and the tens in the next.
    communitySocial StudiesFirst used: Week 1
    A group of people who live, work or play in the same place.
    Our community shares a library and a park.
    commutative propertyMathFirst used: Week 4
    Changing the order of the factors does not change the product.
    4 × 6 = 24 and 6 × 4 = 24.
    comparativeELAFirst used: Week 19
    An adjective that compares two things, often ending in -er.
    Faster is a comparative: a cheetah is faster than a horse.
    A compass rose with N at the top, S at the bottom, E on the right and W on the left.compass roseSocial StudiesFirst used: Week 3
    A symbol on a map that shows directions.
    The compass rose shows that north is at the top of the map.
    complex sentenceELAFirst used: Week 13
    A sentence that joins ideas with a word like because, when, after or if.
    When the bell rang, we ran outside.
    compound sentenceELAFirst used: Week 13
    Two complete sentences joined by a comma and a word like and, but or so.
    It rained all morning, so we played inside.
    A sun plus a flower makes the compound word sunflower.compound wordELAFirst used: Week 22
    A word made by joining two smaller words.
    Sunflower is a compound word made of sun and flower.
    conclusionELAFirst used: Week 8
    The ending of a piece of writing that wraps up the main idea.
    My conclusion told my opinion one more time in new words.
    confederacySocial StudiesFirst used: Week 12
    A group of nations that join together.
    The Haudenosaunee Confederacy joins six nations.
    conflictSocial StudiesFirst used: Week 7
    A serious disagreement or fight between people or groups.
    Arguments over land led to conflict between settlers and Native nations.
    CongressSocial StudiesFirst used: Week 20
    The part of the U.S. government that makes laws.
    Congress meets in Washington, D.C.
    The word and links the words cats and dogs.conjunctionELAFirst used: Week 8
    A word that joins words or sentences, like and, but, or, so or because.
    In "I was tired, so I rested," so is a conjunction.
    ConstitutionSocial StudiesFirst used: Week 20
    The written plan for the United States government.
    The Constitution was written in 1787.
    constraintScienceFirst used: Week 7
    A limit on a design, such as time, money or materials.
    One constraint was that we could use only one magnet.
    consumer (in an ecosystem)ScienceFirst used: Week 10
    A living thing that eats other living things for food.
    A rabbit is a consumer because it eats plants.
    consumer (in economics)Social StudiesFirst used: Week 25
    A person who buys or uses goods and services.
    I am a consumer when I buy a snack.
    context clueELAFirst used: Week 22
    Words near a new word that help you figure out what it means.
    The context clue "as big as a house" helped me learn that enormous means very big.
    continentSocial StudiesFirst used: Week 3
    One of the seven large areas of land on Earth.
    We live on the continent of North America.
    contractionELAFirst used: Week 28
    Two words joined into one, with an apostrophe in place of missing letters.
    Don't is a contraction of do not.
    cooperationSocial StudiesFirst used: Week 7
    Working together to reach a goal.
    Cooperation helped the two groups trade and share food.
    councilSocial StudiesFirst used: Week 19
    A group of people who make laws and decisions for a town or city.
    The town council voted to build a new sidewalk.
    criteriaScienceFirst used: Week 7
    The goals a design must meet to be successful.
    Our criteria said the latch must keep the door shut.
    cultureSocial StudiesFirst used: Week 15
    The way of life of a group of people.
    Food, music and language are all part of a culture.
    A cumulonimbus cloud: a very tall dark storm cloud with a flat top, rain and a lightning bolt.cumulonimbusScienceFirst used: Week 21
    A tall, dark cloud that brings thunderstorms.
    We went inside when we saw a cumulonimbus cloud growing.
    Two puffy white cumulus clouds with flat bottoms float in front of the sun.cumulusScienceFirst used: Week 25
    Puffy white clouds that often mean fair weather.
    The cumulus clouds looked like cotton balls.

    D

    dataScienceFirst used: Week 3
    Facts or measurements collected to answer a question.
    We recorded our data in a table.
    Mushrooms grow on a rotting log while an earthworm and a dead leaf lie on the soil below.decomposerScienceFirst used: Week 10
    A living thing that breaks down dead plants and animals.
    Mushrooms are decomposers that break down fallen logs.
    demandSocial StudiesFirst used: Week 26
    How much of something buyers want.
    On hot days, the demand for lemonade goes up.
    denominatorMathFirst used: Week 19
    The bottom number in a fraction. It tells how many equal parts make the whole.
    In 3/4, the denominator is 4, so the whole has 4 equal parts.
    depositSocial StudiesFirst used: Week 30
    Money put into a bank account.
    I made a deposit of 5 dollars into my savings account.
    A diagram of a plant with labels for the flower, stem, leaf and roots.diagramELAFirst used: Week 6
    A drawing with labels that shows the parts of something.
    The diagram shows the three body parts of an ant.
    dialogueELAFirst used: Week 11
    The words characters say to each other in a story.
    In the dialogue, Sam called, "Wait for me!"
    differenceMathFirst used: Week 3
    The answer when you subtract one number from another.
    The difference between 500 and 175 is 325.
    digitMathFirst used: Week 1
    Any one of the ten symbols 0 to 9 used to write numbers.
    The number 507 has three digits: 5, 0 and 7.
    An array of 3 rows of 6 dots is split by a dashed line into 3 rows of 4 and 3 rows of 2 to show the distributive property.distributive propertyMathFirst used: Week 13
    Breaking a factor into parts, multiplying each part, then adding the products.
    7 × 8 = (7 × 5) + (7 × 3) = 35 + 21 = 56.
    dividendMathFirst used: Week 10
    The number being divided in a division problem.
    In 24 ÷ 6 = 4, the dividend is 24.
    Twelve dots are split into 3 equal groups of 4, showing 12 divided by 3 equals 4.divisionMathFirst used: Week 10
    Splitting a total into equal groups or finding how many equal groups there are.
    We shared 18 grapes among 3 friends: 18 ÷ 3 = 6 grapes each.
    divisorMathFirst used: Week 10
    The number you divide by in a division problem.
    In 24 ÷ 6 = 4, the divisor is 6.

    E

    economicsSocial StudiesFirst used: Week 24
    The study of how people use limited things to meet their needs and wants.
    Economics helps us think about choices with money and time.
    ecosystemScienceFirst used: Week 10
    All the living and nonliving things in one place and how they affect each other.
    A pond is an ecosystem with frogs, fish, plants and water.
    editELAFirst used: Week 11
    To fix mistakes in spelling, capitals, punctuation and grammar.
    I edit my story by checking every capital letter.
    Two clocks show 3:00 and 4:00, with an arrow between them showing that 1 hour has passed.elapsed timeMathFirst used: Week 25
    The amount of time that passes from the start to the end of something.
    Practice ran from 4:10 to 4:55, an elapsed time of 45 minutes.
    electionSocial StudiesFirst used: Week 22
    A time when people vote to choose leaders or decide questions.
    Our class held an election to choose a name for our fish.
    energyScienceFirst used: Week 10
    What living things get from food to grow, move and live.
    In a food chain, energy moves from the grass to the rabbit.
    An engineer in a hard hat holds a wrench and a plan.engineerScienceFirst used: Week 7
    A person who uses science to design solutions to problems.
    An engineer designed a stronger latch for the door.
    A tree grows in soil beside a pond under the sun and a rain cloud, the parts of its environment.environmentScienceFirst used: Week 17
    Everything around a living thing, such as water, light, soil and weather.
    A plant's environment includes the light, water and soil around it.
    equal groupsMathFirst used: Week 4
    Groups that each have the same number of things.
    There are 5 equal groups of 2 socks, so there are 10 socks.
    A level balance holds a block marked 3 + 4 on one side and a block marked 7 on the other, above the equation 3 + 4 = 7.equationMathFirst used: Week 9
    A math sentence with an equal sign that shows two amounts are the same.
    3 × 7 = 21 is an equation.
    A globe on a stand with a bold line around its middle marking the equator.equatorScienceFirst used: Week 20
    An imaginary line around the middle of Earth.
    Places near the equator are warm all year.
    Two same-size bars show that 1/2 and 2/4 cover the same amount.equivalent fractionsMathFirst used: Week 20
    Fractions that name the same amount, like 1/2 and 2/4.
    1/2 and 3/6 are equivalent fractions because they cover the same length.
    estimateMathFirst used: Week 2
    A close guess about an amount or an answer, found with easy numbers.
    To estimate 298 + 405, I think 300 + 400 = 700.
    Eight dots are split into two equal rows of four with none left over, showing that 8 is an even number.even numberMathFirst used: Week 16
    A whole number that can be split into two equal groups with none left over.
    Every product in the ×2 row is an even number.
    evidenceELAFirst used: Week 2
    Words or facts from a text that show an answer is true.
    My evidence is the sentence that says the fox was hungry.
    executive branchSocial StudiesFirst used: Week 20
    The branch of government that carries out laws, led by the President.
    The President leads the executive branch.
    expanded formMathFirst used: Week 1
    A way to write a number as the sum of the values of its digits.
    The expanded form of 472 is 400 + 70 + 2.
    An explorer in a wide hat holds a map with a dotted route and an X.explorerSocial StudiesFirst used: Week 7
    A person who travels to a place to learn about it or find something.
    Explorers sailed across the ocean looking for new trade routes.
    exportSocial StudiesFirst used: Week 26
    A good a country sends to another country to sell.
    Wheat is an export of the United States.
    extinctScienceFirst used: Week 33
    No longer living anywhere on Earth.
    Woolly mammoths are extinct.

    F

    fableELAFirst used: Week 1
    A very short story, often with talking animals, that teaches a lesson.
    In the fable, the ant works hard while the grasshopper plays.
    fact familyMathFirst used: Week 10
    A set of related multiplication and division facts that use the same three numbers.
    3 × 8 = 24, 8 × 3 = 24, 24 ÷ 3 = 8 and 24 ÷ 8 = 3 make a fact family.
    factorMathFirst used: Week 4
    A number that is multiplied by another number.
    In 6 × 4 = 24, the factors are 6 and 4.
    fair testScienceFirst used: Week 3
    A test where only one thing is changed and everything else stays the same.
    In our fair test, we changed only the surface the car rolled on.
    fictionELAFirst used: Week 6
    Writing that tells a made-up story.
    My chapter book about a talking dog is fiction.
    folktaleELAFirst used: Week 4
    An old story that people told aloud for many years before it was written down.
    Grandparents told the folktale to children for hundreds of years.
    A food chain: arrows point from grass to a rabbit that eats it, and from the rabbit to a fox that eats it.food chainScienceFirst used: Week 12
    A path that shows how energy moves from one living thing to another.
    In one food chain, grass is eaten by a rabbit, and the rabbit is eaten by a fox.
    A food web: arrows connect grass to a rabbit and a mouse, and connect the rabbit and the mouse to a fox and an owl.food webScienceFirst used: Week 12
    Many food chains in one place connected together.
    Our food web showed that owls and foxes both eat mice.
    A child pushes a heavy box, and an arrow shows the push.forceScienceFirst used: Week 1
    A push or a pull on an object.
    I used a force to push the door open.
    forecastScienceFirst used: Week 25
    A prediction of what the weather will be.
    The forecast says it will rain tomorrow.
    A fossil fish skeleton pressed into a slab of rock.fossilScienceFirst used: Week 33
    The remains or traces of a living thing from long ago, often kept in rock.
    We found a fossil of a shell in the rock.
    A circle cut into 4 equal parts with 3 parts shaded, next to the fraction 3/4.fractionMathFirst used: Week 19
    A number that names equal parts of a whole, like 3/4.
    Our pizza had 8 equal slices, and I ate 3/8 of it.
    A box slides across a bumpy surface while a friction arrow points the opposite way.frictionScienceFirst used: Week 3
    A force that slows things down when two surfaces rub together.
    A rug has more friction than ice, so the toy car stops sooner.

    G

    A globe on a stand shows land shapes on a round model of Earth.globeSocial StudiesFirst used: Week 3
    A round model of Earth.
    On the globe, I found all seven continents.
    glossaryELAFirst used: Week 1
    A list of special words and their meanings at the back of a book.
    I checked the glossary to learn what nectar means.
    A basket of apples and a loaf of bread are goods that people grow or make to sell.goodsSocial StudiesFirst used: Week 13
    Things people make or grow that can be bought and sold.
    Food, clothes and toys are goods that often travel by truck or ship.
    governmentSocial StudiesFirst used: Week 19
    A group of people who make and carry out rules and laws for a place.
    Our state government takes care of the state parks.
    gramMathFirst used: Week 26
    A unit for measuring the mass of light objects.
    A paper clip has a mass of about 1 gram.
    An apple falls from a branch while an arrow points down toward the ground.gravityScienceFirst used: Week 1
    A pull that brings things down toward the ground.
    Gravity pulled the ball back down.

    H

    habitatScienceFirst used: Week 11
    The place where a plant or animal lives and gets what it needs.
    A pond is a good habitat for a frog.
    A ruler from 0 to 2 inches with an arrow marking one half inch, from the 1-inch mark to the next half-inch mark.half inchMathFirst used: Week 24
    Half of an inch; the mark halfway between two inch marks on a ruler.
    The crayon is 3 and a half inches long, to the nearest half inch.
    hazardScienceFirst used: Week 21
    Something in nature, like a storm or flood, that can cause harm.
    Lightning is a weather hazard.
    headingELAFirst used: Week 6
    A title at the top of a section that tells what the section is about.
    The heading "What Bees Eat" told me what that part was about.
    hexagonMathFirst used: Week 33
    A polygon with 6 sides.
    Each cell in a honeycomb has the shape of a hexagon.
    A bear sleeps curled up in a den under the snow in winter.hibernateScienceFirst used: Week 11
    To rest deeply through the winter with the body slowed down.
    Groundhogs hibernate during the winter.
    homelandSocial StudiesFirst used: Week 6
    The land where a people has lived for a very long time.
    The Lenape homeland includes the land where New York City is today.
    A pear and a pair of socks, with the words pear and pair that sound the same.homophoneELAFirst used: Week 27
    Words that sound the same but have different spellings and meanings.
    There, their and they're are homophones.
    human resourceSocial StudiesFirst used: Week 25
    A worker and the skills they use to make goods or services.
    The baker's skill at making bread is a human resource.
    A hurricane seen from above: a huge spinning storm with curved cloud bands around a calm eye, over ocean waves.hurricaneScienceFirst used: Week 21
    A huge spinning storm that forms over warm ocean water.
    The hurricane brought strong winds and heavy rain to the coast.

    I

    imageryELAFirst used: Week 15
    Words that help you picture something using your senses.
    The imagery in the poem helped me hear the crunchy leaves.
    A person with a suitcase arrives in a new country, with a ship in the harbor behind.immigrantSocial StudiesFirst used: Week 16
    A person who moves to a new country to live there.
    My neighbor is an immigrant from Brazil.
    immigrationSocial StudiesFirst used: Week 16
    Moving to a new country to live there.
    Immigration has brought people from all over the world to the United States.
    importSocial StudiesFirst used: Week 26
    A good that comes into a country from another country.
    Most bananas sold in U.S. stores are imports.
    incomeSocial StudiesFirst used: Week 30
    Money a person earns, usually by working.
    Mr. Lee earns income by fixing bikes.
    indexELAFirst used: Week 6
    An ABC list at the back of a book that shows where topics are.
    The index told me that hives are on page 5.
    inferenceELAFirst used: Week 22
    A smart guess you make using text clues and what you already know.
    I made an inference that it rained because the umbrella was wet.
    inherited traitScienceFirst used: Week 28
    A trait passed from parents to their young.
    A zebra's stripes are an inherited trait.
    instinctScienceFirst used: Week 11
    A behavior an animal does without being taught.
    A spider spins its web by instinct.
    interdependenceSocial StudiesFirst used: Week 28
    Depending on each other for goods and services.
    Farmers and truck drivers show interdependence: each needs the other's work.
    interestSocial StudiesFirst used: Week 25
    Extra money a bank pays people for keeping savings there.
    My savings account earned a little interest.
    introductionELAFirst used: Week 19
    The beginning of a piece of writing that hooks the reader and names the topic.
    My introduction asked a question to hook the reader.
    inverse operationsMathFirst used: Week 10
    Operations that undo each other, like multiplication and division.
    Since 5 × 6 = 30, I know 30 ÷ 6 = 5.
    irregular verbELAFirst used: Week 10
    A verb that changes its spelling in the past tense instead of adding -ed.
    Run is an irregular verb because its past tense is ran.

    J

    judicial branchSocial StudiesFirst used: Week 20
    The branch of government made of courts that decide what laws mean.
    The Supreme Court is part of the judicial branch.

    K

    A metal weight with a handle labeled 1 kg.kilogramMathFirst used: Week 26
    A unit for measuring the mass of heavier objects.
    A big bag of rice has a mass of about 5 kilograms.

    L

    A tall mountain stands beside a rounded hill, two natural shapes of the land.landformSocial StudiesFirst used: Week 4
    A natural shape of the land, like a hill or a valley.
    A mountain is the tallest kind of landform.
    A striped caterpillar, the larva of a butterfly, crawls along a leaf.larvaScienceFirst used: Week 15
    The young, worm-like stage of some insects, like a caterpillar.
    The monarch larva ate milkweed leaves.
    lawSocial StudiesFirst used: Week 19
    A rule that everyone in a place must follow.
    A law says drivers must stop at red lights.
    A child wearing a helmet practices riding a bicycle.learned behaviorScienceFirst used: Week 29
    Something a living thing learns to do by watching, practice or being taught.
    A dog that learns to sit when asked shows a learned behavior.
    legislative branchSocial StudiesFirst used: Week 20
    The branch of government that makes laws.
    Congress is the legislative branch.
    Arrows in a circle link a bean seed, a sprouting seedling and a grown bean plant with pods to show a life cycle.life cycleScienceFirst used: Week 15
    The stages a living thing goes through as it grows, changes and has young.
    A frog's life cycle goes from egg to tadpole to adult frog.
    A line plot: a number line from 1 to 5 with X marks stacked above the numbers to show how often each value appears.line plotMathFirst used: Week 24
    A number line with X marks that show how often each value appears in data.
    Each X on our line plot stands for one leaf we measured.
    linking wordELAFirst used: Week 8
    A word or phrase that connects ideas, like because, also or for example.
    I used the linking word also to add my second reason.
    liquid volumeMathFirst used: Week 26
    How much liquid a container holds.
    The pitcher has a liquid volume of 2 liters.
    A bottle filled with water up to a line, labeled 1 L.literMathFirst used: Week 26
    A unit for measuring larger amounts of liquid.
    A large water bottle holds about 1 liter.
    literalELAFirst used: Week 15
    Words that mean exactly what they say.
    "The dog ran fast" is literal.
    local governmentSocial StudiesFirst used: Week 19
    The government of a city, town, village or county.
    Our local government fixes the roads.
    A long longhouse with a rounded roof is covered with bark panels and has a door at one end and a smoke hole on top.longhouseSocial StudiesFirst used: Week 6
    A long, bark-covered house built by Haudenosaunee people for several families.
    Today, Haudenosaunee communities still gather in longhouses for ceremonies.

    M

    A horseshoe magnet with a north pole and a south pole pulls on two paper clips.magnetScienceFirst used: Week 4
    An object that pulls on iron and steel and can attract or repel other magnets.
    The magnet picked up the steel paper clips.
    main ideaELAFirst used: Week 7
    What a paragraph or text is mostly about.
    The main idea of the paragraph is that owls hunt at night.
    majority ruleSocial StudiesFirst used: Week 22
    A way of deciding in which the choice with more than half the votes wins.
    With majority rule, pizza won with 4 of the 7 votes.
    map keySocial StudiesFirst used: Week 3
    The part of a map that tells what its symbols mean; also called a legend.
    The map key shows that a tent means a campground.
    map scaleSocial StudiesFirst used: Week 3
    A line on a map that shows how map distance compares to real distance.
    The map scale shows that 1 inch stands for 10 miles.
    A market stand with a striped awning and baskets of fruit for sale.marketSocial StudiesFirst used: Week 26
    Any place where buyers and sellers trade.
    We bought peaches at the farmers market.
    massMathFirst used: Week 26
    How much matter, or stuff, is in an object.
    A grape has less mass than an apple.
    mayorSocial StudiesFirst used: Week 19
    The leader of a city or town government.
    The mayor cut the ribbon at the new library.
    metamorphosisScienceFirst used: Week 15
    A big change in body form as an animal grows.
    A caterpillar goes through metamorphosis to become a butterfly.
    A flock of birds flies in a V from a cold, snowy place toward a warm, sunny place.migrateScienceFirst used: Week 11
    To move from one place to another when the seasons change.
    Many geese migrate south for the winter.
    milliliterMathFirst used: Week 26
    A unit for measuring very small amounts of liquid.
    A teaspoon holds about 5 milliliters of water.
    A globe on a stand is a small model of the real Earth.modelScienceFirst used: Week 17
    A smaller or simpler copy of something real that helps us understand it.
    We built a model of a pond ecosystem in a jar.
    moralELAFirst used: Week 4
    The lesson a fable teaches.
    The moral of the fable is to tell the truth.
    motionScienceFirst used: Week 1
    Moving from one place to another.
    A push put the toy car in motion.
    A number line counts by tens with equal jumps from 0 to 10, 20, 30 and 40.multiple of 10MathFirst used: Week 16
    A number you say when you count by tens, like 20, 50 or 90.
    60 is a multiple of 10, so 4 × 60 is 4 × 6 tens, or 240.
    multiplicationMathFirst used: Week 4
    Putting together equal groups to find how many in all.
    4 × 3 = 12 is multiplication: 4 groups of 3 make 12.
    mythELAFirst used: Week 4
    A very old story that explains something in nature, like the seasons.
    The myth tells why the sun moves across the sky.

    N

    narrativeELAFirst used: Week 10
    Writing that tells a story, real or made up, with events in order.
    My narrative tells about the day I lost my tooth.
    narratorELAFirst used: Week 10
    The one who tells a story.
    In my story about the beach, I am the narrator.
    Native nationSocial StudiesFirst used: Week 6
    A Native American or Alaska Native people with its own government and way of life.
    The Cherokee Nation is a Native nation with its own government.
    natural resourceSocial StudiesFirst used: Week 4
    Something useful that comes from nature, like water, trees or soil.
    Trees are a natural resource used to make paper.
    needSocial StudiesFirst used: Week 1
    Something people must have to live, like food, water and shelter.
    Clean water is a need for every community.
    An owl sits wide awake on a branch at night under the moon and stars.nocturnalScienceFirst used: Week 11
    Active at night and resting during the day.
    Owls are nocturnal, so they hunt at night.
    non-contact forceScienceFirst used: Week 4
    A push or pull that works without touching, like a magnet's pull.
    A magnet's pull on a paper clip is a non-contact force.
    nonfictionELAFirst used: Week 6
    Writing that gives true facts about real people, places and things.
    A book about volcanoes is nonfiction.
    nonliteralELAFirst used: Week 1
    Words that do not mean exactly what they say.
    "It's raining cats and dogs" is nonliteral; it means it is raining hard.
    nounELAFirst used: Week 2
    A word that names a person, place, thing or idea.
    Dog, park and kindness are all nouns.
    A number line from 0 to 10 with equally spaced tick marks.number lineMathFirst used: Week 1
    A line with numbers marked in order at equal spaces.
    I placed 47 on the number line between 40 and 50.
    numeratorMathFirst used: Week 19
    The top number in a fraction. It tells how many equal parts are counted.
    In 3/4, the numerator is 3.

    O

    octagonMathFirst used: Week 33
    A polygon with 8 sides.
    A stop sign is shaped like an octagon.
    A hen stands with her two baby chicks, her offspring.offspringScienceFirst used: Week 28
    The young of a living thing.
    The cat's offspring all had striped fur.
    open syllableELAFirst used: Week 7
    A syllable that ends with a vowel, so the vowel usually says its name.
    In robot, the first syllable, ro, is an open syllable.
    A child shares an opinion in a speech bubble that begins I think that.opinionELAFirst used: Week 8
    What a person thinks or believes about something. Others may disagree.
    My opinion is that summer is the best season.
    opportunity costSocial StudiesFirst used: Week 24
    The next-best thing you give up when you make a choice.
    When I chose the zoo, the opportunity cost was the movie.

    P

    A paleontologist in a sun hat brushes dirt off a dinosaur bone in the ground.paleontologistScienceFirst used: Week 33
    A scientist who studies fossils.
    The paleontologist carefully dug up a dinosaur bone.
    A parallelogram, with tick marks showing that opposite sides are the same length.parallelogramMathFirst used: Week 34
    A quadrilateral whose opposite sides are the same length and run the same direction.
    Every rectangle is also a parallelogram.
    paraphraseELAFirst used: Week 3
    To tell an idea from a text in your own words.
    I paraphrased the sentence so it used my own words.
    parenthesesMathFirst used: Week 13
    Marks ( ) that show which part of a problem to do first.
    In (3 + 4) × 2, I add inside the parentheses first: 7 × 2 = 14.
    A rectangle partitioned into 4 equal parts, each labeled 1/4.partitionMathFirst used: Week 24
    To split a shape into parts that have equal area.
    I can partition a rectangle into 6 equal parts, each 1/6 of the area.
    patternScienceFirst used: Week 6
    Something that repeats in a way you can predict.
    A swinging pendulum moves in a pattern.
    A weight hangs from a string on a frame and swings back and forth.pendulumScienceFirst used: Week 6
    A weight hanging from a string or rod that swings back and forth.
    We counted how many times our pendulum swung in 10 seconds.
    pentagonMathFirst used: Week 33
    A polygon with 5 sides.
    The shape has 5 sides and 5 vertices, so it is a pentagon.
    A rectangle with sides of 5 cm and 3 cm and a dashed arrow going all the way around it, showing a perimeter of 16 cm.perimeterMathFirst used: Week 30
    The distance all the way around a flat shape.
    A rectangle 5 cm long and 3 cm wide has a perimeter of 16 cm.
    A picture graph with rows of stars and a key showing that each star stands for 2.picture graphMathFirst used: Week 35
    A graph that uses pictures, with a key that tells what each picture stands for.
    In our picture graph, each star stands for 2 votes.
    place valueMathFirst used: Week 1
    The value a digit has because of its place in a number.
    In 385, the 8 is in the tens place, so its value is 80.
    point of viewELAFirst used: Week 16
    How a writer or character thinks or feels about something.
    From the cat's point of view, bath time is the worst time of day.
    polarScienceFirst used: Week 20
    Very cold, near the North Pole or South Pole.
    Emperor penguins live in the polar climate of Antarctica.
    poleScienceFirst used: Week 4
    One of the two ends of a magnet, where its push or pull is strongest.
    The north pole of one magnet attracts the south pole of another.
    Five polygons: a triangle, a rectangle, a pentagon, a hexagon and an octagon.polygonMathFirst used: Week 30
    A closed flat shape made of straight sides.
    A triangle is a polygon, but a circle is not.
    A town sign says Population 9,000 above a group of people.populationSocial StudiesFirst used: Week 8
    The number of people who live in a place.
    Our town's population grew when new families moved in.
    possessiveELAFirst used: Week 2
    A word form that shows who or what owns something, like dog's or kids'.
    In "the bird's nest," bird's is a possessive.
    precipitationScienceFirst used: Week 19
    Water that falls from clouds, such as rain, snow, sleet or hail.
    Our rain gauge measured the precipitation.
    A hawk, a predator, swoops down with its talons out to catch a mouse.predatorScienceFirst used: Week 12
    An animal that hunts other animals for food.
    A hawk is a predator that hunts mice.
    predictScienceFirst used: Week 1
    To use what you know to tell what will happen next.
    I predict the car will roll farther on the smooth floor.
    prefixELAFirst used: Week 13
    A word part added to the beginning of a word that changes its meaning.
    The prefix re- in reread means again.
    PresidentSocial StudiesFirst used: Week 20
    The leader of the executive branch of the U.S. government.
    The President can sign a bill to make it a law.
    A hawk swoops down toward a small mouse, its prey, running through the grass.preyScienceFirst used: Week 13
    An animal that is hunted by another animal for food.
    Mice are prey for owls.
    A green plant with leaves and roots makes its own food using sunlight.producer (in an ecosystem)ScienceFirst used: Week 10
    A living thing, like a plant, that makes its own food.
    Grass is a producer because it uses sunlight to make food.
    producer (in economics)Social StudiesFirst used: Week 25
    A person or business that makes goods or provides services.
    A farmer is a producer of corn.
    productMathFirst used: Week 4
    The answer to a multiplication problem.
    The product of 7 and 3 is 21.
    pronounELAFirst used: Week 2
    A word that takes the place of a noun, like he, she, it or they.
    In "Mia lost her hat," her is a pronoun.
    A first model of a bridge, made of sticks and tape, holds a weight for its first test.prototypeScienceFirst used: Week 7
    The first working model of a design, built to test it.
    Our prototype latch held the door, but it was hard to open.
    publishELAFirst used: Week 28
    To make a final, neat copy of your writing to share with others.
    I published my report with pictures and a title page.
    A butterfly pupa, called a chrysalis, hangs from a twig while the insect changes form inside.pupaScienceFirst used: Week 15
    The stage when an insect changes form inside a case.
    The monarch pupa rests inside a hard green case called a chrysalis.

    Q

    quadrilateralMathFirst used: Week 33
    A polygon with 4 sides.
    Squares, rectangles and rhombuses are all quadrilaterals.
    quarter inchMathFirst used: Week 24
    One fourth of an inch on a ruler.
    The bean is 1 and a quarter inches long, to the nearest quarter inch.
    quotation marksELAFirst used: Week 3
    Marks that go around the exact words someone says or writes.
    Ana said, "Let's go to the park!"
    quotientMathFirst used: Week 10
    The answer to a division problem.
    In 35 ÷ 5 = 7, the quotient is 7.

    R

    rain gaugeScienceFirst used: Week 19
    A tool that measures how much rain has fallen.
    Our rain gauge showed that 1 inch of rain fell.
    reader's theaterELAFirst used: Week 34
    Reading a script aloud with expression, like a play without costumes or a stage.
    In reader's theater, I read the part of the fox.
    rectangleMathFirst used: Week 34
    A quadrilateral with 4 square corners.
    A sheet of notebook paper is a rectangle.
    regionSocial StudiesFirst used: Week 4
    An area where places share features like land, climate or ways of life.
    The Midwest region has flat farmland and the Great Lakes.
    regroupMathFirst used: Week 2
    To trade 10 ones for 1 ten, or 10 tens for 1 hundred.
    To add 258 + 136, I regroup 14 ones as 1 ten and 4 ones.
    repeated additionMathFirst used: Week 4
    Adding the same number again and again.
    5 + 5 + 5 is repeated addition, and it equals 3 × 5.
    repelScienceFirst used: Week 4
    To push away.
    Two north poles repel each other.
    researchELAFirst used: Week 17
    Finding facts about a topic by reading and checking sources.
    I did research on frogs at the library.
    reservationSocial StudiesFirst used: Week 6
    Land set aside by treaty or law as a homeland for a Native nation.
    The Navajo Nation's reservation stretches across three states.
    responsibilitySocial StudiesFirst used: Week 21
    A duty; something a person should do.
    Following the rules is a responsibility of every citizen.
    reviseELAFirst used: Week 13
    To change your writing to make it clearer or stronger.
    I revised my story by adding a stronger ending.
    A rhombus, with a tick mark on each side to show that all four sides are the same length.rhombusMathFirst used: Week 34
    A quadrilateral with 4 sides that are all the same length.
    Every square is a rhombus, but not every rhombus is a square.
    rhymeELAFirst used: Week 15
    Words that end with the same sound.
    Cat, hat and bat rhyme.
    rightSocial StudiesFirst used: Week 21
    A freedom that the law protects.
    Freedom of speech is a right.
    A tree with the root word play on its trunk and the words replay, player and playful on its branches.root wordELAFirst used: Week 29
    A word or word part that other words are built from.
    If I know the root word agree, I can figure out agreement.
    roundMathFirst used: Week 1
    To change a number to the closest ten or hundred.
    If I round 347 to the nearest ten, I get 350.
    rowMathFirst used: Week 4
    A line of things that goes straight across.
    The egg carton has 2 rows of 6 eggs.
    A barn, a silo and a fence stand in open farm fields.ruralSocial StudiesFirst used: Week 2
    Having to do with the countryside, where homes and towns are far apart.
    In our rural town, the nearest store is a long drive away.

    S

    scarcitySocial StudiesFirst used: Week 26
    Not having enough of something for everyone to have all they want.
    Scarcity of water made the town limit lawn watering.
    sensory detailsELAFirst used: Week 11
    Words that tell how something looks, sounds, smells, tastes or feels.
    Sensory details like "hot, salty fries" make my story come alive.
    sequenceELAFirst used: Week 1
    The order in which events happen.
    I used first, next and last to tell the sequence.
    serviceSocial StudiesFirst used: Week 25
    Work people do to help others, often for pay.
    A haircut is a service.
    settingELAFirst used: Week 1
    When and where a story takes place.
    The setting of the story is a farm in winter.
    settlerSocial StudiesFirst used: Week 7
    A person who moves to a new place to live and build a home.
    Settlers built farms near the river.
    sideMathFirst used: Week 33
    One of the straight edges of a polygon.
    A triangle has 3 sides.
    simple sentenceELAFirst used: Week 13
    A sentence with one complete thought.
    "The puppy barked" is a simple sentence.
    An open book and a magnifying glass show a source, a place to find information.sourceELAFirst used: Week 17
    A place you get information from, like a book, article or website.
    I used two sources to learn about volcanoes.
    sovereign nationSocial StudiesFirst used: Week 19
    A nation that governs itself.
    Native nations are sovereign nations with their own governments.
    specializeSocial StudiesFirst used: Week 26
    To focus on making one kind of good or doing one kind of work.
    The bakery specializes in bread.
    speciesScienceFirst used: Week 30
    One kind of living thing whose members can have young together.
    All pet dogs belong to one species.
    squareMathFirst used: Week 34
    A quadrilateral with 4 equal sides and 4 square corners.
    Every square is also a rectangle and a rhombus.
    square centimeterMathFirst used: Week 28
    A square that is 1 centimeter on each side, used to measure area.
    The small sticker covers about 4 square centimeters.
    square inchMathFirst used: Week 28
    A square that is 1 inch on each side, used to measure area.
    Each space on the game board is 1 square inch.
    One square with each side 1 unit long.square unitMathFirst used: Week 28
    A square with sides 1 unit long, used to measure area.
    The rectangle has an area of 20 square units.
    standard formMathFirst used: Week 1
    The usual way to write a number using digits.
    The standard form of three hundred six is 306.
    stanzaELAFirst used: Week 1
    A group of lines in a poem.
    The poem has three stanzas with four lines each.
    static electricityScienceFirst used: Week 4
    An electric charge that builds up when some things are rubbed together.
    I rubbed a balloon on my sweater, and static electricity made it stick to the wall.
    stratusScienceFirst used: Week 25
    Flat, gray clouds that spread across the sky like a blanket.
    Stratus clouds covered the sky, and a light drizzle fell.
    subject-verb agreementELAFirst used: Week 13
    When a verb matches its subject, like the dog runs and the dogs run.
    "The kids play" shows subject-verb agreement; "The kids plays" does not.
    suburbanSocial StudiesFirst used: Week 2
    Having to do with a community near a city.
    Many suburban families have yards.
    suffixELAFirst used: Week 16
    A word part added to the end of a word that changes its meaning.
    The suffix -less in fearless means without.
    sumMathFirst used: Week 2
    The answer when you add numbers.
    The sum of 245 and 132 is 377.
    summaryELAFirst used: Week 7
    A short retelling of the most important ideas in your own words.
    My summary of the article was three sentences long.
    superlativeELAFirst used: Week 19
    An adjective that compares three or more things, often ending in -est.
    Tallest is a superlative: Sam is the tallest of the three kids.
    supplySocial StudiesFirst used: Week 26
    How much of something sellers have to sell.
    When the supply of strawberries is large, prices often go down.
    A large courthouse with tall columns, a pointed roof and wide steps.Supreme CourtSocial StudiesFirst used: Week 20
    The highest court in the United States.
    The Supreme Court has nine justices.
    syllableELAFirst used: Week 1
    A word part with one vowel sound.
    Pancake has two syllables: pan and cake.
    synonymELAFirst used: Week 22
    A word that means the same or almost the same as another word.
    Big and large are synonyms.

    T

    table of contentsELAFirst used: Week 1
    A list at the front of a book showing chapters and their page numbers.
    The table of contents says chapter 3 starts on page 20.
    A tadpole with a round body and a long tail swims underwater.tadpoleScienceFirst used: Week 15
    A young frog that lives in water and breathes with gills.
    The tadpole grew back legs.
    taxSocial StudiesFirst used: Week 19
    Money people and businesses pay to the government for shared services.
    Taxes help pay for schools and fire trucks.
    temperateScienceFirst used: Week 20
    Having four seasons, with warm summers and cool or cold winters.
    Ohio has a temperate climate.
    temperatureScienceFirst used: Week 19
    How hot or cold something is.
    The temperature this morning was 50 degrees.
    text featureELAFirst used: Week 6
    A part of a text, like a heading or caption, that helps you find information.
    Bold words and diagrams are text features.
    A thermometer with a scale and a liquid column rising from its bulb.thermometerScienceFirst used: Week 19
    A tool that measures temperature.
    I read the thermometer every morning.
    time-order wordsELAFirst used: Week 10
    Words like first, next, then and finally that show when things happen.
    I used time-order words to tell my story in order.
    topic sentenceELAFirst used: Week 7
    A sentence, often the first one, that tells the main idea of a paragraph.
    My topic sentence was "Frogs are amazing jumpers."
    A tornado: a spinning funnel of air reaching from a storm cloud down to the ground.tornadoScienceFirst used: Week 21
    A spinning column of air that reaches from a storm cloud to the ground.
    During a tornado warning, go to a small inside room with no windows on the lowest floor.
    tradeSocial StudiesFirst used: Week 13
    To exchange goods or services.
    I trade my apple for my friend's orange.
    traditionSocial StudiesFirst used: Week 6
    A way of doing something that is passed down over time.
    Making tamales together is a holiday tradition in my family.
    traitScienceFirst used: Week 28
    A feature of a living thing, like color, shape or size.
    Long ears are a trait of rabbits.
    transitionELAFirst used: Week 19
    A word or phrase that helps writing move smoothly from one idea to the next.
    "For example" is a transition I use before a fact.
    A trapezoid, with arrow marks showing that its top and bottom sides run the same direction.trapezoidMathFirst used: Week 34
    A quadrilateral with at least one pair of sides that run the same direction.
    The lampshade shape is a trapezoid because its top and bottom run the same direction, like train tracks.
    treatySocial StudiesFirst used: Week 6
    A formal written agreement between nations.
    The United States signed treaties with many Native nations.
    tribal governmentSocial StudiesFirst used: Week 19
    The government of a Native nation, which makes its own laws.
    The Cherokee Nation has its own tribal government.
    tropicalScienceFirst used: Week 20
    Hot all year and often very rainy, near the equator.
    A rainforest near the equator has a tropical climate.
    Two stair steps labeled 1 and 2 lead up to a flag with a question mark, showing two steps to solve a problem.two-step problemMathFirst used: Week 5
    A word problem that takes two steps to solve.
    To solve the two-step problem, I added first and then subtracted.

    U

    unbalanced forcesScienceFirst used: Week 2
    Forces that are not equal, so an object starts, stops or changes speed or direction.
    When I kicked the ball, unbalanced forces made it move.
    unit fractionMathFirst used: Week 19
    A fraction with 1 as the numerator, like 1/3 or 1/8.
    One slice of a pie cut into 6 equal parts is the unit fraction 1/6.
    unknownMathFirst used: Week 3
    A number in a problem that we do not know yet.
    In 6 × n = 42, the letter n stands for the unknown, which is 7.
    Tall city buildings with many windows stand close together.urbanSocial StudiesFirst used: Week 2
    Having to do with a city.
    Urban areas have tall buildings and busy streets.

    V

    variableScienceFirst used: Week 6
    Something in an investigation that can be changed.
    The length of the string was the variable we changed.
    Three ladybugs of the same kind have different numbers of spots, showing variation.variationScienceFirst used: Week 14
    Small differences among living things of the same kind.
    The puppies in one litter show variation in fur color.
    verbELAFirst used: Week 1
    A word that shows an action or a state of being.
    Jump, swim and is are all verbs.
    verb tenseELAFirst used: Week 10
    The form of a verb that shows when something happens: past, present or future.
    I walk, I walked and I will walk show three verb tenses.
    A triangle with one corner marked by a dot and an arrow to show a vertex.vertexMathFirst used: Week 33
    A corner where two sides of a shape meet. More than one are vertices.
    A square has 4 vertices.
    vetoSocial StudiesFirst used: Week 20
    To reject a bill so it does not become a law.
    The President can veto a bill.
    volunteerSocial StudiesFirst used: Week 1
    A person who does work to help others without being paid.
    Volunteers cleaned up the park.
    voteSocial StudiesFirst used: Week 22
    To make a choice in a group decision or an election.
    We voted on where to eat dinner.
    vowel teamELAFirst used: Week 2
    Two letters that work together to make one vowel sound.
    The ai in rain is a vowel team.

    W

    wantSocial StudiesFirst used: Week 24
    Something nice to have that people can live without.
    A new video game is a want, not a need.
    warningScienceFirst used: Week 21
    An alert that dangerous weather is happening now or is about to happen.
    A tornado warning means take cover right away.
    watch (weather)ScienceFirst used: Week 21
    An alert that dangerous weather could happen, so stay ready.
    A tornado watch means stay alert and know your plan.
    weatherScienceFirst used: Week 19
    What the air is like at one place and one time.
    Today's weather is sunny and windy.
    A weather map shows a sun, a rain cloud, an H for high pressure, an L for low pressure and a cold front line with triangles.weather mapScienceFirst used: Week 25
    A map that uses symbols to show the weather in many places.
    The H on the weather map stands for high air pressure.
    wholeMathFirst used: Week 19
    One complete thing, before it is split into equal parts.
    Four fourths make one whole: 4/4 = 1.
    wind vaneScienceFirst used: Week 19
    A tool that points into the wind to show which way it is blowing from.
    The wind vane pointed north, so the wind was blowing from the north.
    word formMathFirst used: Week 1
    A way to write a number using words.
    The word form of 518 is five hundred eighteen.