Page 75 - TP_Play_V2.1_class3
P. 75
BLOCKS
There are mainly nine types of block categories available in Scratch 3.0. You will
now learn about some commonly used blocks. Blocks are the code or command
used to create a program in Scratch. It looks like puzzle piece and each block
connects with other blocks to perform a task.
Motion Blocks
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 move 10 steps motion block is used to
move a sprite.
Here, 10 is the number of steps that the sprite will move forward. You can change
the number of 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 Blocks
The blocks that are used to add speech and thought bubbles to the sprite are
called Looks Blocks. 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.
Blocks in Looks category are also used to change appearance of a sprite.
Events Blocks
Event blocks are used to manage the events which trigger the
when clicked
movement of the sprite. It helps to run the script on the stage. It
gives you 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:
1
Step 1 Click on the Choose a Sprite tool in
the Sprites Info Pane.
Introduction to Scratch 73

