3.1 Learning about Variables and Expressions

Front

What does a variable represent in a program?

Back

An abstraction inside the program that can hold a value.

Answer explanation

A variable is an abstraction in a program that can hold a value, allowing for dynamic data storage and manipulation. This distinguishes it from fixed values, errors, or GUI elements.

Front

What does the increment operation do?

Back

Add one to a number.

Answer explanation

The increment operation specifically refers to adding one to a number. Therefore, the correct answer is 'Add one to a number.' This operation is commonly used in programming and mathematics.

Front

What is a variable type in Snap!?

Back

The kind of values a variable can have and the operations that can be performed on it.

Answer explanation

A variable type in Snap! defines the kind of values a variable can hold and the operations that can be performed on those values, making it essential for understanding how to use variables effectively.