Public Service Announcements are another great way to teach PERSUASIVE writing in an engaging, relevant way to students.. Lessons on HOW to teach persuasive writing are available atREADWRITETHINKand other great websites that are tailored to teachers.
I like having children think of issues that are relevant to them, and then making them READ children's books about the issues. I teach them how to take notes and research. There are so many great children's books and websites like EPIC or RAZ KIDS that can easily differentiate your lessons to suit a child's ability.
Of course, YOU TUBE has plenty of PSAs that are great for children. Some of the ones I use for grades 3 and 4 are below!
And of course, there are some REALLY great videos about how to create PSAs. You can make up your own success criteria from these videos after the students have watched it.