| A | B |
|---|
| variable | The smallest unit of data storage that a program can use. A variable contains known or unknown information referred to as a “value.” Two types of variables are global and local. |
| argument | The values that a program provides to a function or subroutine. Sometimes coding professionals use the terms “argument” and “parameter” interchangeably. In this course, argument is a better choice because Python does not use the term parameter. |
| string | Text or characters displayed by a program. In MIT App Inventor block mode, a text block lets you manage how text or “strings” will be presented to the user of an app. |
| concatenation | A joining together of separate items—without changing them—into one place. |
| call a procedure | To direct a program to execute or reference a certain procedure. A procedure is a subroutine that is stored only once, but can be called many times in a program to execute when needed. |
| arithmetic operator | A symbol in code that tells a computer to perform a specific math operation, such as addition, subtraction, multiplication, or division. |
| logical operator | A representation of a logical statement that is used to examine the relationship between two values and determine whether the statement is true or false (Boolean conditionals). Examples of logical operators are AND, OR, and NOT. |
| Debug | To identify errors or bugs in computer hardware or programs and fix them. |
