1. Empowering students with the skills required to lead the way in hi-tech world.

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Section 1 Introduction
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Scratch Homepage
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Let’s meet Sprite
Demo side
Your Canvas
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Let’s try a few things
Task: 1
Change the background of demo screen.
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Import Sun
Task: 2- Lets import sun
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Make Sun Smaller
Task: 3
Decrease the size of sun
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Lets Import 2 planets
Task: 4
Import Earth and make it smaller
Import Saturn and make it smaller
Now you should have three sprites.
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9. Section 1b Let’s start the code
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Where to code?
You have to code under scripts
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11. First we will set positions of all planets
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What are coordinates
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X axis
X axis
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Y axis
Y axis
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15. Let’s guess the coordinates
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Place the Sun
Where is the sun in the solar system?
Lets put the Sun in the Centre (Origin) at 0,0
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Place the Saturn
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Place the Earth
Is the earth or Saturn closer to sun?
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Step 2
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Pen Command
What do clear and “pen down” commands do?
Lets put these on both Saturn and Earth
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Step 3
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22. Point In Direction Command
What direction will planets go in? UP (0)
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Step 4
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Loops
Instruction to computer to repeat
Repeat a portion of code for a set number of times.
Let’s learn about loops with an example.
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25. Let’s make 1 PBJ Sandwich
How many repetitions required for 500 sandwiches?
What do you need to make one peanut butter and jam sandwich?
Start
Spread Peanut butter on one slice
Spread jam on one slice
Put both slices together
End
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Loops in Scratch
Loops in scratch are called “repeat” and “forever”.
Repeat command runs for a certain number of type.
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27. Lets use loops on our planets
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Step 5
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Move Command
Now we have to move our planets. Let’s learn how to move earth
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Move Command
Now we have to move our planets. Let’s learn how to move Saturn
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Step 6
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Turn Command
Do planets move in straight line or around the sun?
Planets revolve around the sun
We will learn how to revolve our 2 planets around the sun by using “Turn” command.
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Turn Command
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Step 7
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Rocket
Create a new sprite.
This sprite should be hidden in the beginning
It should only appear once space is pressed
Also add a new backdrop (planets)
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Rocket Sprite
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Hide Other Sprites
Task A: Hide Other Sprites
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Moving the Rocket
Task B: Launch the rocket, make it move to the top, then in the stars. The rocket moves only when you click on it.
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Homework
Repeat the same with 2 more planets
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That’s it for today
Thank You !!!!
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