In this Grade 4 lesson from Vocabulary from Classical Roots Book A, students study three Latin roots — cresco (to grow), facio (to make), and texo (to weave) — and learn key vocabulary words derived from them, including accrue, crescendo, excrescence, beneficence, efficacious, facile, facsimile, faction, mollify, and context. Students explore how recognizing these roots helps decode the meaning of unfamiliar words across a wide range of contexts. The lesson is part of Chapter 5's focus on creativity and builds foundational vocabulary skills through etymology and word study.
Section 1
The Root of Growth: CRESCO
Let's watch your vocabulary skills grow with these words, all stemming from the Latin root CRESCO, meaning "to grow" or "to increase."
| Word | Definition |
|---|---|
| accrue | (v.) to increase or build up over time |
| crescendo | (n.) a gradual increase in sound |
| excrescence | (n.) an abnormal growth |
Section 2
The Root of Making: FACIO
Time to make some new connections! These words are all built from the Latin root FACIO, which means "to make."
| Word | Definition |
|---|---|
| beneficence | (n.) the act of doing good; kindness |
| efficacious | (adj.) effective in producing a result |
| facile | (adj.) easy to do; fluent |
| facsimile | (n.) an exact copy |
| faction | (n.) a small group within a larger group |
| mollify | (v.) to calm or soothe someone |
Section 3
The Root of Weaving: TEXO
Let's weave together the meaning of these two words, which both come from the Latin root TEXO, meaning "to weave."
| Word | Definition |
|---|---|
| context | (n.) the words or situation that help explain the meaning of something |
| pretext | (n.) a false reason used to hide the real one |
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
The Root of Growth: CRESCO
Let's watch your vocabulary skills grow with these words, all stemming from the Latin root CRESCO, meaning "to grow" or "to increase."
| Word | Definition |
|---|---|
| accrue | (v.) to increase or build up over time |
| crescendo | (n.) a gradual increase in sound |
| excrescence | (n.) an abnormal growth |
Section 2
The Root of Making: FACIO
Time to make some new connections! These words are all built from the Latin root FACIO, which means "to make."
| Word | Definition |
|---|---|
| beneficence | (n.) the act of doing good; kindness |
| efficacious | (adj.) effective in producing a result |
| facile | (adj.) easy to do; fluent |
| facsimile | (n.) an exact copy |
| faction | (n.) a small group within a larger group |
| mollify | (v.) to calm or soothe someone |
Section 3
The Root of Weaving: TEXO
Let's weave together the meaning of these two words, which both come from the Latin root TEXO, meaning "to weave."
| Word | Definition |
|---|---|
| context | (n.) the words or situation that help explain the meaning of something |
| pretext | (n.) a false reason used to hide the real one |
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter