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VARIABLES
A program is a group of commands and instructions that tell the computer to carry out a
task. In scratch, a program is called a script. A script is made up of a number of blocks. So, the
blocks are the commands or instructions that we give to the sprite to perform a task.
All the numbers, text, date or pictures that we use in a program are called data. We store this
data in the computer memory so that we can get information from it later. This data is stored
in variables. It is called variable because it does not have a fixed value, its value changes. For
example, in the move block, the variable has a value 10 by default. You can modify this value
according to your script. Variables can store numbers as well as letters.
Creating Variables in Scratch
To create variables in Scratch, follow the given steps:
Click on For this sprite only if you want this variable to appear for the selected sprite only.
Here, we have added the variable fruit. It will be available for all the sprites.
2 Click on Make a Type a variable
Variable block. 3 name in the New
variable name box.
Click on
the radio
button of
either of the 4
options.
1 Click on Variables
block category.
5
Click on Ok button.
The variable appears in the
list of Variables blocks.
Observe that the variable
name fruit appears in all
the blocks.
Now create the following Factbot
script:
Every time you type a name or number,
the previous value in the variable gets
deleted and the new value is stored.
More on Scratch 113

