Letter writing is an engaging and important writing format for third graders to master. You can support the development of letter writing expertise with this lesson that provides guidance on the structure and anatomy of a letter. Written by curriculum experts, this lesson will teach kids the various features that make a letter easier to read, and will also offer plenty of opportunities to practice.

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.