Programming from scratch™
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Transcript of Programming from scratch™
Programming from Scratch™Gerry Rowley
In this session
• We will use Scratch to manipulate images• Play sounds• Look at program control• Make decisions• Repeat actions
What is a computer?
• Accepts inputs• Does some processing• Has output• Hardware• Software
Scratch™
Hello World
• Traditionally the first program you write in any language is Hello World
Let’s get started
Click on Create
Click on Costumes
Import 4 ballerinas
• Next we will choose a background for the stage.• Here is one I made earlier!
• Select Scripts and the Control button
• Drag the block on to the script area.
• We want Belinda to dance forever. • Which block would you choose?• Would this work? • How would you make it better?
This is mine
Meet Nibbles
• He has two costumes• Changing them makes him look as if he is walking• Make it so!
• I have imported a background
• This block is not much good but it works!
• I used the duplicatebutton
• Can you moveNibbles?
Nibbles moves!
Could you find a better way?
• What about this?
To stop Nibbles walking off the screen
• We need something new• A variable…• Something that changes• We will use X and Y
What does this do?
There are more activities here
• https://scratch.mit.edu/starter_projects/