When beginning a new writing unit, I like to provide my students with an exemplar model so they can see an example of the type of writing that they are striving to emulate. Included in this set is:

Personal narrative (Ice Cream Adventure)

Opinion essay (The Best Pet)

Informative Essay (Alligators- includes a reference page as well)

Because these are google docs, they are fully editable and customizable to meet your specific needs.