The images of both MLK and Malcolm X, the text labels, the buttons that play the two speeches, and the black background are all part of the User Interface for the enhanced version of the I Have A Dream app.
2. A computational artifact is something created by a human using a computer. We've just created a mobile app, which is certainly an example of such a artifact. Given examples from your own experience of computational artifacts that you've created -- images, videos, presentations, mash-ups -- and describe the software you used to create them.
I have created videos on YouTube for school projects that are formed from many different video clips stitched together. School presentations made on PowerPoint or Google slides are also examples of computational artifacts. Even this website is a computational artifact.