Progressive (adjective) – proceeding in steps; continuing steadily by increments or by continuous improvement.
Unless it is something simple, as a beginner programmer and even as an experienced programmer, you don't write all of your code at one time. You should write a few lines of code and then check it. Then, you should "progressively" add code as you move forward until the project is complete.
This app will illustrate the art of progressive programming and at the same time allow you to create a simple but real world example.