Page 75 - Computer - 3

5. Stack the Change size block from the Blocks palette under the
Think block, and set the size value to 25.

6. Stack the Change colour effect block from the Blocks

palette under the Change size block and change its value to 20.
7. Click the top block in the stack to run the project.

The Cat sprite says ‘Hello! My name is Kitty’, thinks ‘I can change my colour and
size!!’, and then changes its size and colour. The images for the execution of the
script are given below.

Control Blocks

The Control blocks are used to control the scripts. These blocks are colour-coded
orange. Some blocks in the Control blocks category are:

Block Function

Pauses the execution of the script for a specified number of seconds
before moving to the next block in the script.

Repeats the enclosed stack of blocks for a specified number of
times.

Repeats the enclosed stack of blocks indefinitely until the script is

stopped.

Executes the enclosed stack of blocks if the specified condition is

True.

Executes the stack of blocks enclosed under ‘if’, if the specified
condition is True, else executes the stack of blocks under ‘Else’.

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