1. Lesson 1 Introduction to Scratch Basic blocks
Using the arrow keys to move your sprite
Initialization

2. Introduction to Scratch
3 areas
The stage area
The sprites area
The scripts/costumes/sounds area

3. The Stage Area

4. The Sprites Area Sprites = actors We can have any number of sprites.
Each sprite has its own set of scripts, costumes and sounds.
Stage (background)
You can draw your own sprite.

5. The Scripts
Programming part
Drag the blocks to the scripts area

6. The Costumes
Important part of making a live motion

7. The Sounds

8. Basic blocks Start Motion blocks Move
Setting the position of the sprite
When the sprite touches the edge, it bounces (to the opposite direction).

9. Basic blocks Event block Looks blocks Sound blocks
When a ‘key’ is pressed
Looks blocks
Change costume
Sound blocks
Play sound

10. Using the arrow keys to move your sprite

11. Initialization Reset necessary objects to default value E.g.
(starting) position of sprites
Counting variables (will be taught next lesson)
etc.

12. Exercise 1
Your task:
The “Cat” sprite moves under the user’s control using arrow keys.
The costume of the Cat changes so that it looks like walking.
Set the starting position of the Cat (initialization).
The Cat “meow”s (play sound) when it goes to the right.