Step1
Read plenty of examples of narrative writing, focusing on one period of history. Both historical journals and historical fiction are great tools for middle school students to study writing narratives. Incorporate some pieces which are less than 5 pages so that you can have students emulate the structure.
Step2
Have each students construct a character from the historical period you are studying. Make her describe the character's age, appearance, job, family, and personality. As strange as it may seem, for many writers (especially younger writers) it is easier to write a narrative from the perspective of an imaginary person.
Step3
Have students draw their characters, presentation them to the class, and do other activities that might make the character more real to the students.
Step4
Make each student keep a journal from the perspective of his historical character. Give him a different assignment every few days. One day, for example, you could have him describe a typical day in the life of that character. Another day, you can have him describe a hardship the character might face.
Step5
As the class continues, become more rigorous in your requirements. Create lesson plans to illustrate narrative structure. Explain plot structure, characterization, conflict, and other elements of a story.
Step6
Begin to focus on one element at a time. For example, one day you can have each students describe a setting (her character's home, for example), Another day, she can describe a conflict the character faced, and so on.
Step7
Begin to require full stories from your students. Each journal entry should describe the setting, characters, conflict, plot, and resolution.
Step8
Put together a book for the class including every student's best piece of narrative writing. Give the book out to every member of the class. Make them feel proud of what they have accomplished.