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There are two types of variables in Scratch:

Global Variables: These variables are created on any sprite and can be accessed
or modified by other sprites in the project by choosing For all sprites.

Local Variables: These variables are created for a specific sprite and can only
be used by that sprite, selected by choosing For this sprite only.

The variable blocks used in Scratch are:

This block refers to a custom variable that you create
my variable
in your project.

set my variable to 0 This block sets the selected variable to a specific value.

This block adds or subtracts a certain number to the
change my variable by 1
variable.

This block shows the value of the chosen variable on
show variable my variable
the screen.

hide variable my variable This block hides the chosen variable from the screen.

CREATING A GAME IN SCRATCH

Have you ever dreamt of creating a computer game?

Here’s your chance to turn it into reality with a Scratch project. Let’s learn how to
create a game in Scratch using Sensing blocks and Variables to make the game

more interactive and engaging.

To create a game in Scratch, follow the given steps:

Step 1 Choose a sprite as the main character of your game (a cat or a player).

Step 2 Add another sprite to be a target the player needs to touch (a star).

Step 3 Create a Variable and name it score v for the player sprite.

Step 4 Place the Star sprite at a random position on the stage.

Step 5 Choose a suitable backdrop for the game.

Step 6 Now, create the given script for your player sprite.

Scratch Meets AI 113