Communicating thanks, greetings, or news can all be done in a letter. Even though e-mails and text messages tend to be common for everyday communication, letters are a great way to convey the out-of-the-ordinary, such as an announcement or an expression of appreciation. Using the language arts skills included in the Common Core standards, readers learn how to write a letter with proper grammar, appropriate vocabulary, and the correct structure. The many kinds of letter readers may write are introduced too, from complaints to invitations. Helpful fact boxes offer tips, such as additional salutations and closings.