Page 44 - Ones and Zeros 4 (Student Book)

Data and Variables

data variable

‘variables’ block ‘Sound’ menu

Let’s Learn

Data is information stored in a computer. The information we store can be facts
or figures. The score of a game is an example of data. Data is stored in a computer
as a variable. Every time you answer correctly, the variable will change, and your score
gets higher.

Let’s Practise

Adding score to the game.

We’re going to use ‘variables’ block to keep score.

1 Open Scratch by double-clicking on the
‘Scratch’ shortcut.

2 Load the project, ‘A Wizard’s Quiz.sb3’.

3 From the ‘Variables’ menu, click on
the button ‘Make a Variable’.

4 Let’s name this variable, ‘Score’.
Then, click ‘OK’.
5 Add the block named ‘change ‘my
variable’ by 1’. Be sure to change
the ‘my variable’ selection to ‘Score’.

6 Drag it under the ‘say ‘Correct’
for 2 seconds’ block.

7 Repeat this for the other ‘say’
blocks that have to do with the
correct answers only.

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