| Term | Definition |
| add | Join together to find the total or sum |
| addend | Any numbers being added together, like 2+3+6 |
| air | Invisible, odorless and tasteless gases that surround the earth |
| cause | Why something happens |
| American | A citizen of the United States of America |
| audience | A group that listens or watches |
| authority | A person in charge |
| building | A permanent structure, like a house, a church, or a store |
| celebration | Activities for a special occasion |
| effect | what happened |
| citizen | A person who has rights and privileges |
| city | A place where people live, larger than a town |
| cloud | tiny bits of water that are visible above the earth |
| coach | A person who helps you or your team |
| composer | A person who writes music |
| Conductor | A person who leads the band or chorus |
| consonant | A letter other than a vowel |
| country | A place where people live with the same government |
| desert | A dry sandy place |
| dictionary | A book giving the meanings of words in alphabetical order |
| difference | The answer to a subtraction problem |
| doubles | Two addends that are the same number, like 3+3, 6+6 |
| earth | The planet we live on |
| emergency | Something unexpected calling for quick action |
| fact families | Addition and subtraction sentences that use the same numbers |
| forest | A growth of trees |
| globe | A round model of the earth |
| habitat | A place where animals or plants live and grow |
| healthy | Being free of illness or disease |
| sequence | the order in which things happen, like first, next, last |
| insect | A small animal with six legs and three body parts |
| leader | A person who can lead or take charge |
| Library | A place where reading material is kept for use but not for sale |
| long vowel | A vowel that says its name |
| magnet | A material that attracts iron |
| map | A picture that shows where places are |
| mountain | A landform higher than a hill |
| museum | A building where objects of interest are displayed |
| details | the most important ideas |
| neighborhood | A place where people live, work and play |
| ocean | A body of salt water that covers ¾ of the earth |
| question | A sentence that asks something |
| river | A large natural stream of water that flows into a ocean |
| science | Observing and studying things in nature and the world |
| scientist | A person who studies science |
| seasonal change | Changes that happen during fall, winter, spring and summer |
| shelter | Something that protects or covers us |
| short vowel | A vowel sound, not the one that says their name |
| sky | What is above the earth |
| spelling | Writing letters in a certain order to make a word |
| state | Sections of a country, like the United States of America |
| statement | Tells something |
| story problem | Sentences that tell a math problem |
| subtract | Take away or find the difference between two numbers |
| sum | The answer to an addition problem |
| tempo | Rate of speed when music is played |
| town | A place where people live, smaller than a city |
| transportation | A way of moving from one place to another |
| vote | To make a choice |
| vowel | The letters a, e, i, o, u, and sometimes y |
| world | The earth |