Page 103 - Trackpad v5 class 5
P. 103

We have already learnt how to change the costume of a sprite and to work with two
            sprites in the previous class. Now, in this chapter, we will learn to create variables and

            control the movement of the sprite in a better manner.



                     VARIABLES IN SCRATCH

            Variables are used to hold information such as words or numbers. Variables are named
            locations where you can store information. We can create variables for one or for all the

            sprites.

            GLOBAL VARIABLES

            If a variable is created, to be used and modified by all the sprites, then it is known as
            a global variable. A Global variable can be created on any sprite but its value can be
            accessed or modified by other sprites used in the project.

            LOCAL VARIABLES

            Local variables can only be accessed or modified from the sprite where it was created.


            CREATING A VARIABLE
             To create a variable, follow the given steps:



                                                                                 4  Select whether the
                                                        2  Click on Make         block is ‘For all sprites’ or
                                                       a variable.               ‘For this sprite only’.






                                                        3  Type a name
                                                        in New Variable
                                                        name box.








                    1  Click on the Variables Block.                                5  Click on OK button.






                  Tick ( ) if you know this.
                 ▶   Variables are a named location where you can store information.

                 ▶   We can create our own variables in Scratch.




                                                                                             More on Scratch  101
   98   99   100   101   102   103   104   105   106   107   108