This lists the rules for comma usage. This addresses the Common Core standard for Grade Language: Demonstrate command of the conventions of standard English capitalization, punctuation, and spelling when writing... but it's good knowledge for everyone!
The Seven Deadly Sins of Punctuation And How You Can Avoid Them (Note: Read carefully. They preface each "faux pas," telling you the correct usage, but provide the WRONG way as examples. It's confusing).
Apoye a sus hijos en inglés #ExperienciasPositivas, #ApoyarALosHijos, #CreerAcompañarCrecer, #AprenderInglés
This is a sheet that contains persuasive sentence starters. Cut the sentence starters our and give to children to use while writing their persuasive sentence, or paragraph, depending on the grade level. You could use these to show how persuasive writing differs from other types of writing, and the clues that we look for in writing to tell the type of text it is.