Page 102 - 2620_Birla Open Mind C-3

BLOCKS

Blocks are the codes or commands used to create a program in Scratch. It looks like a puzzle
piece and each block connects with the other block to perform a task.

Motion Block

The blocks that are used to control the movement of a sprite are known as Motion blocks.
They are blue in colour. For example, the motion block is used to move a sprite.

Here by default, 10 is the number of steps that the sprite will move forward. You can change

the number of steps move 10 steps . To make the sprite move backward, give a minus (–) sign before
the number as shown below move -30 steps . This will move the sprite 30 steps back on the stage.

Looks Block

The blocks that are used to add speech and thought bubbles to the sprite are called Looks
Block. They are purple in colour.

For example, you want to add a speech bubble to the sprite for 2 seconds with a message
‘Hello!’ as shown say Hello! for 2 seconds .

You can change the message by clicking on the message text box and typing your own
message. You can also change the time by clicking on the time text box. think Hmm... for 2 seconds

Events Block

This is the topmost block means it is placed at the top of the script. It helps
to run the script on the stage as it controls the starting of scripts. It gives you when clicked
the control of all the blocks as without an event block no program will run.

To run the script, you have to click on the Go button before the other blocks.

ADDING A SPRITE

When you open Scratch, the default Sprite1 is the cat. The location of the sprite cat is at the
centre of the stage. Let us add another sprite to the stage.

To add a sprite, follow the given steps:

Click on a sprite
to add it to your 2
project.

Click on the Choose
1
a Sprite option.

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