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Example 15: When the green flag is clicked, the sprite sets its colour to a randomly picked value
between 1 and 10. It then thinks “Hmm” for a duration between 60>50 seconds, and finally says
“Hello!” for a duration 12-4=8 seconds.
Variables Blocks
These blocks in Scratch are used to store and manipulate data values. These blocks can hold
variables and lists. There are 5 Variables blocks and 11 list blocks in Scratch 3.0.
Variables can hold numbers or strings and can be used to keep track of information that changes
during the execution of a program.
Block Explanation
Creates a new variable.
Represents the value of the variable named “my variable.”
The name can be changed to anything meaningful.
Sets the value of the variable to a specified value.
Changes the value of the variable by a specified value.
Displays the variable’s value on the stage.
Hides the variable’s value from the stage.
This block creates a new list variable that can be used to
store and manipulate multiple items.
Example 16: Make a script to take two numbers from user and display their sum in the speech
bubble.
Follow the given steps:
Step 1: Click on the Variables category.
Learning Scratch 83

