These are words that you'll see in 4th grade texts in all subject areas. You'll know some of the words already, and some may be new. Take some time to review the words and example sentences.
Then, watch the vocabulary videos based on this word list to learn more about each word's history and word parts.
After you've reviewed the list and videos, use the List 2 vocab quiz to test your understanding of the words.
device (noun)
de·vice (dih-VICE): an object or machine that has a special purpose or does a certain job
[[☃ explanation 1]]
discovery (noun)
dis·cov·er·y (dihs-CUHV-uh-ree): finding or learning something for the first time
[[☃ explanation 2]]
engineer (noun)
en·gin·eer (en-juh-NEER): someone who uses science to design and build machines, bridges, roads, etc.
[[☃ explanation 3]]
[[☃ explanation 4]]
experiment (noun)
ex·per·i·ment (ihk-SPEHR-uh-ment): a test that a scientist uses to learn something
[[☃ explanation 5]]
experiment (verb)
ex·per·i·ment (ihk-SPEHR-uh-ment): to perform a scientific test to learn something
[[☃ explanation 6]]
experiment (noun)
ex·per·i·ment (ihk-SPEHR-uh-ment): trying out a new idea to see if it works
[[☃ explanation 7]]
experiment (verb)
ex·per·i·ment (ihk-SPEHR-uh-ment): to try out a new idea to see if it works
[[☃ explanation 8]]
invention (noun)
in·ven·tion (in-VEHN-shun): a new thing or idea that someone comes up with
[[☃ explanation 9]]
inventor (noun)
in·ven·tor (in-VEHN-ter): a person who creates a new thing or way of doing something
[[☃ explanation 10]]
recognize (verb)
rec·og·nize (REHK-ug-nize): to know who someone is because you’ve seen them before; to know what something is because you’ve seen it before
[[☃ explanation 11]]
recognize (verb)
rec·og·nize (REHK-ug-nize): to understand or say that something is real or true
[[☃ explanation 12]]
research (noun)
re·search (REE-serch; rih-SERCH): careful study to learn new things about something
[[☃ explanation 13]]
research (verb)
re·search (REE-serch; rih-SERCH): to study something carefully to learn new things about it
[[☃ explanation 14]]
solution (noun)
so·lu·tion (suh-LOO-shun): a way to solve or deal with a problem
[[☃ explanation 15]]