This lists the rules for comma usage. This addresses the Common Core standard for 6th Grade Language: 6.SL.2. Demonstrate command of the conventions of standard English capitalization, punctuation, and spelling when writing.
The Growing Room Ideas for teaching children writing creative story vocabulary spelling sentence paragraph words fun games
Four square writing method for organizing paragraphs for the younger grades or essays for the older grades. Our special ed. teacher showed me this. I think I might try it to help my 4th graders to organize their persuasive essays.
Example of color coding paragraphs to teach students the parts of a well developed paragraph. Goes well with Step Up to Writing model but may be used in any classroom.