Operation Manual

A beginner’s guide to Scratch

If you wanted to use a two-word name for your variable, you would separate the

words with an underscore (the “_” character), not a blank space.

Using variables in Scratch

Ok, now we’re going to create and use variables. Click on Variables in the Blocks

Palette and create a variable called “game_score”.

Tip...

Give each variable

a name that

reminds you what

is stored in it.

For example,

if you are creating

a game and you

use a variable to

store the score,

then a good name

for the variable

would be

“game_score”.

Notes:

Click on the Variables button, then on

the button labelled “Make a variable”.

This opens the “Variable name?”

dialogue window. Enter the name

“game_score” for your variable

and click OK.

Drag “Set [game_score] to [0]” to

the Scripts tab. Then, from Control,

drag the block “when Sprite1

clicked”. Join the two together

to make a script.

The default value for new

variables is “0”. Select the block

“set [game_score] to [0]” and

change the value to “100”.

Finally, from Looks, I have used a

“say [Hello] for [2] secs” block but

changed it to “say [Great, I’ve got

100 points] for [2] secs”.