The mysterious comma is arguably the trickiest form of punctuation, which is why assigned it it’s own unit in 5th grade. As students become more sophisticated writers they craft more complex sentences. They incorporate independent phrases and clauses, generate compound sentences, and utilize transition words to combine ideas - and the exercises in this unit will teach them how to use commas correctly in each scenario.

Third grade writers will be tasked with writing longer and more complicated sentences. This guided lesson in understanding, constructing and punctuating sentences can support kids as they learn to build bigger and better sentences in their writing. Grammar instruction and practical examples were written by our curriculum experts, complete with a list of recommended building sentence worksheets for third graders.