A subordinating conjunctions worksheet for 3rd Grade: students complete sentences from a word box, combine sentence pairs, and write one of their own. Answer key included, so complex-sentence practice takes no prep.
The Rewriting Compound Subjects Worksheet has 3rd grade students combine four sentence pairs into one sentence with a compound subject, then split two more apart. An answer key is included, so checking is quick.
This Conjunctions Worksheet helps 3rd graders choose the right joining word and combine short sentences into smoother ones. Includes an answer key — a clear, no-prep way to practice coordinating and subordinating conjunctions.
A hiking-themed using conjunctions worksheet that has 3rd graders pick the right joining word from a word bank, then combine sentence pairs of their own. Answer key included for fast, no-prep grammar practice.
This rewrite compound predicates worksheet helps 3rd graders join sentence pairs with and, then split compound predicates apart. An answer key is included, so checking is quick.
Glue words that join ideas together
Conjunctions are joining words. Third graders already know and, but, or, so, and now they use them to combine short, choppy sentences into longer ones: I was hungry. I ate lunch. = I was hungry, so I ate lunch. They also learn subordinating conjunctions like because, when, after, before, if and although, which add a reason, a time or a condition to a sentence. Writing gets richer fast. The click moment comes when a child rereads a paragraph full of short sentences and joins three of them without being asked.
Conjunctions turn simple writing into grown-up writing. These moves get kids using them for real.
Write two short sentences on the board, like "The dog barked. The mail came." Think aloud about which conjunction fits best: and, so, or because? Try each one and talk about how the meaning changes. Kids see that the choice matters.
Why it works: handing over the work step by step, from teacher to student, is one of the most widely used teaching frameworks (Pearson and Gallagher, 1983).
Try it withConjunctions WorksheetWorksheetsOpen it →Kids take two sentences with the same action, "Sam ran. Mia ran.", and build one sentence: "Sam and Mia ran." Then they do the same with predicates. Building new sentences from old ones gives them real control over their writing.
Why it works: going from real objects to pictures to symbols is a core recommendation of the U.S. Department of Education's elementary math guide.
Try it withRewriting Compound Subjects WorksheetWorksheetsOpen it →Show a sentence with a blank and three conjunction choices. Kids hold up the letter of the best fit and explain why. Five quick ones at the start of writing time keep the words fresh in their heads.
Why it works: researchers who compared ten study methods found practice testing is one of the two that work best (Dunlosky and colleagues, 2013).
Try it withUsing Conjunctions WorksheetWorksheetsOpen it →Sentence games that make kids think about meaning.
Teacher favorites right now: Subordinating Conjunctions Worksheet, Rewriting Compound Subjects Worksheet and Conjunctions Worksheet.
Conjunctions are words that join words, phrases or sentences. Third graders use and, but, or and so, plus subordinating conjunctions like because, when, after and if.
It is a joining word that adds a reason, time or condition to a sentence, like because, when, although or if. In "We stayed inside because it rained," because is the subordinating conjunction.
Take two short sentences and ask them to join them in different ways using and, but, so or because. Talk about how each joining word changes the meaning.
When a conjunction joins two complete sentences, put a comma before it: "I was tired, so I went to bed." Third graders practice this in their own writing.
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