Cover letter
Imagine you are applying for an communications internship and have decided to submit a portfolio of your work from your Communication Arts 260 class as a way to demonstrate your communication skills to your potential employer. While your assignments show that you have experience with writing in four distinct genres, they would benefit from some contextualization and explanation. You need to write a cover letter that can frame and explain your writing samples in such a way that will win over the hiring committee.
The purpose of a cover letter of this kind is threefold: to introduce yourself as a desirable candidate for the position; to elaborate on each piece of your portfolio as evidence of your skills as a communication professional; and to tie the entire portfolio together as not just a set of unconnected examples, but a complete picture of your abilities and perspective as a communicator. This is very common and necessary type of professional writing, and this assignment is meant to give you practice with it.