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/