In this chapter, we met Scratch for the first time and we learned basic concepts of computer science, as well as constructs for writing programs in Scratch.

Scratch is a visual programming environment that we will use to become acquainted with concepts of computer science. Scratch does this by enabling you to create computerized animations. Initially, the Scratch environment will be unfamiliar and we will invest effort in learning the details of how to use it. Very quickly you will find that you have mastered the environment and we will progress from creating very simple animations to more complex ones. Even the complex animations will be built stepby- step to help you learn the new concepts and constructs. Scratch is not used in professional software development, but the concepts that will learn as you create projects in Scratch will appear again and again when you proceed to study more advanced computer science.