Page 113 - Learn To Program With Scratch

5

Var ia BL e S

This chapter explains how to create scripts that can

read in and remember values. When you use variables,
you can write applications that interact with users and
respond to their input. Here’s what we’ll cover in this
chapter:

• The data types supported by Scratch
• How to create variables and manipulate them
• How to obtain input from users and write interactive programs

Though the scripts you wrote in the last four chapters helped you learn
important Scratch programming skills, they lacked many key elements of
a large-scale application. More complex programs can remember values
and decide to take an action based on certain conditions. This chapter will
address the first of these two deficiencies, and decision making will be cov-
ered in the next chapter.

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