Page 89 - Trackpad_V2.1_Class3
P. 89

A computer also follows stepwise instructions to complete any task known as a
                 program. We can define a program as a set of systematic instructions that direct

                 the computer to do specific tasks and get the desired results. Programs are written
                 in a special language known as a programming language. The person who writes
                 these programs is known as a programmer.

                 In  this chapter we will learn  about  Scratch. It is a block-based  programming

                 language.




                           WHAT IS SCRATCH?


                 Scratch is a visual programming language used to create computer
                 animation,  games  and  stories.  Visual  programming means  that
                 rather than having to type the code (instructions), we use blocks of

                 code that we put together to create our projects. This makes it easier
                 to get started. It enables us to see the results of our work quickly and
                 even includes graphics and sound to it.


                                                                                                     PURE
                         Scratch was created by Mitchel Resnick at the MIT Media Lab in 2007.        FACT







                           ADVANTAGES OF SCRATCH


                 Scratch is simple, easy to understand and learn. It is used more than many other

                 programming languages for the following reasons:

                    We don’t have to remember or type commands, we can just drag and drop them
                   as we desire.

                    Commands fit together like puzzle pieces, so we get clear visual hints about how

                   to combine them.

                    We can create animations, quizzes and stories.

                   We can create and share our Scratch project online on the Scratch website.




                                In how many languages is Scratch available?





                                                                                 Introduction to Scratch Programming  87
   84   85   86   87   88   89   90   91   92   93   94