Using MIT Scratch for Programming and Control Exercise

Using MIT Scratch for Programming and Control Exercise 5 – Drawing with Scratch Year 9 ICT Autumn Term 2007

What you will learn: • • Delete a sprite and import a new sprite Draw using the Pen feature of scratch Make a simple script to draw circles Use the “pen up” and “pen down” feature Change the colour of the pen Set the start position of the sprite Make a sprite appear and disappear using show and hide

Delete the cat sprite • Click the scissors button and delete the cat sprite

Browse for a new sprite • Click the centre button below the stage and browse for the drawing pencil sprite

Drawing pencil sprite • The drawing pencil comes with a script • Investigate the drawing pencil script

Clear command • Delete the script • Click the pen menu to investigate the options • Drag the clear command into the programming area

Drawing a circle • Copy the script below to draw a small circle • (Hint 24 times 15 is 360) this repeat script will become a building block for more complex scripts

Drawing a circle • Move the drawing pen to a new position and draw a few more circles

Changing position automatically • Edit the script as shown • Double click the clear symbol and run the script

Changing colours • Edit the script as shown • Double click the clear symbol and run the script

Setting the start position • Add commands to set the start position of the sprite as x = -150 and y = -150

Making the pen appear and disappear • Add in show and hide at the beginning and end of the script

Over to you…. . • Now that you have learned the basic of pen programming you can experiment with your own ideas and designs