Should it be your student's faces or your students' faces

How does this comparison reinforce what powell is trying to say in this paragraph

Use a dictionary to find the primary accent in the word. type an "a" in the box above the syllable that should be accented. unilateral.

You will read a story and a prompt. then, you will organize your own story ideas in the narrative organization chart.view the grading rubric as you complete your work. this is your guide to a super submission.read the narrative "grounded."in the narrative organization chart, plan your own story based on this writing prompt.important: save the organizer, immediately, to your computer or drive.you are writing a continuation of the story, “grounded,” so be sure to use some details from this story as you organize your narrative.complete each box on your narrative organization chart.save your work to your computer or drive.submit your work in 03.02 planning your narrative.if you cannot save your chart, you can type the information into a document and submit.