Follow this link: Social Identity Theory to an article by Saul McLeod and use the information you find to help you create a digital narrative on the topic. Follow this link: Digital Storytelling to help you discover what that is and how to go about making them up.
I suggest you begin by using PowerPoint, but you are free to use whichever application or software you feel comfortable with.
Remember, for our purposes you need at least six slides including a title card with your name and the name of your narrative. And do your best so this work can become part of your portfolio.