learning programming in scratch for beginners

1. Scratch Programming
This Photo by Unknown Author is licensed under CC BY-SA-NC

2. LEARNING OBJECTIVES
At the end of this topic Students will be comfortable in using
 Sensing blocks
 Using Mathematical Operators
 Comparing values
 Generating random Numbers
 Changing Location Randomly
 Bouncing the Ball Up and Down
 Making a Variable
 Making Decision
 Applying Condition

3. INTRODUCTION
Scratch is a visual programming environment that makes it easy
to create interactive stories, games, art and animations.
For coding in Scratch you won’t need to write lines of code
because they’ll be provided in blocks.

4. BASIC CODE BLOCKS OF SCRATCH
Motion : These blocks control the motion of a sprite.
Looks : these blocks help user to change the
appearance of the sprite.
Sound: these blocks help add sounds to our project
and control them.
Events: These blocks help to trigger actionin in any
project.

5. CONTI..
Controls: These blocks help to have control over the
code such as conditions and loops.
Sensing: These blocks help our code be alive. It helps
the sprite detect things and sense them
Operators: These blocks help in all mathematical
operations such as addition, subtraction,
multiplication etc. and OR , AND .
Variables: These blocks help in the list and variable
operations.

6. OPERATORS IN SCRATCH
Operators Block is fun and
interesting.
This block helps in scripting
mathematical equations.

7. BASIC ARITHMETICAL OPERATORS

8. COMPARISON OPERATOR

9. VARIABLES
Variable is a named
data storage location
which stores a value
and this value can be
changed during the
execution of the
program.

10. TYPES OF VARIABLES
https://edu.google.com/
https://www.youtube.com/watch?v=jdxomoHx3co
• Numeric
• String
• Boolean

11. SENSING BLOCKS
Watch this video
https://www.youtube.com/watch?v=YMrM00VDw4I

12. GETTING INPUT FROM THE USER
https://www.youtube.com/watch?v=1PswttcxCko

13.  Click on Sensing set
and get the Ask and
wait command.
 Also click on the
answer check box to
make it show on the
display window.
 The answer box is the
storage in memory,
that is variable.
SENSING COMMAND AND INPUT
https://www.youtube.com/watch?v=1Pswt
tcxCko

14. MOVING THE SPRITE ON A
RANDOM POSITION
 When you place these
blocks in your code. It will
move the sprite on a
random position.

15. BOUNCING BALL GAME
 Delete the default sprite
and select the ball in
sprites.
 Add the shown blocks in
your code.
Watch the video to make another ball game:
https://www.youtube.com/watch?v=BlmBDrnhd2I

16. MAKING DECISIONS IN SCRATCH
 To make decisions we use if-then
and If-then-else blocks from control
sections.
 In if block we add condition and
the correct answer is added inside
the if block if the condition is true.
 For Example:

17. HANDS ON PRACTICE
1. Make the cat sprite fly towards your
mouse pointer.
2. Create Guess the number game. In this
game the player has to guess the
number which computer picks.

18. QUIZ
 https://forms.gle/BzZkZFNZyfz87vZL9