Coordinating Conjunctions Worksheets
The coordinating conjunctions (and, but, or, so) each signal a relationship: addition, contrast, choice, or result. Third graders choose the one that fits and start using them to build compound sentences, in line with the grade-3 standard on conjunctions.
By grade
What students need to know
A conjunction joins ideas: and adds, but shows a difference, or gives a choice, so shows what happens because of it.
This skill runs from 1st grade through 4th grade. Pick a grade above for level-matched sentences, teaching notes, and worksheets.
Coordinating Conjunctions across the grades
1st Grade
And, but, and or are joining words: they connect two ideas into one sentence. First graders pick the joiner that fits, learning that and adds, but flips, and or offers a choice, the three moves their own speech already makes all day.
2nd Grade
Coordinating conjunctions are the small joining words: and adds ideas together, but points out a difference, or offers a choice. Second graders pick the joiner that fits the meaning of the sentence, which is really practice in reading both halves carefully.
3rd Grade
The coordinating conjunctions (and, but, or, so) each signal a relationship: addition, contrast, choice, or result. Third graders choose the one that fits and start using them to build compound sentences, in line with the grade-3 standard on conjunctions.
4th Grade
Fourth graders work with the full everyday set, including yet (a sharper cousin of but), and they read more carefully to tell "so" (result) from "but" (contrast). Choosing the right conjunction is groundwork for the compound-sentence punctuation rules at this grade.