Unit 0

Conditional

• A process of repeating a set of instructions a specified number of times or until a condition is met. Such as in a repetition of a process or a newer version of development in computer science.

• The Boolean expression in an if-structure that is evaluated to determine which branch of code to execute.

• Maintains a running total.

• Stores a list of values built up over time and remembers separate individual values.

Boolean Expression

• Stores user input or stores information about a program's state that changes unpredictably.

• Maintains a running total.

• Evaluates to either true or false

• Keeps track of a record best or worst and updates when a new record best or worst has been reached.

A variable that counts in an arithmetic sequence, usually counting by ones starting at 0 or 1.

• Most Recent Variable

• Stepper Variable

• Fixed Variable

• Walker Variable

Stores one item from a list at a time during iteration

• Walker variable

• Stepper variable

• Fixed Variable

• Most recent variable

Keeps track of a record best or worst and updates when a new record best or worst has been reached.

• Best-so-far variable

• Walker variable

• stepper variable

• accumulator variable

One-way Flag Variable

• Keeps track of a record best or worst and updates when a new record best or worst has been reached.

• A variable that counts in an arithmetic sequence, usually counting by ones starting at 0 or 1.

• Stores one item from a list at a time during iteration.

• Stores whether a condition has been true yet; reset before iteration and possibly raised during iteration.

Accumulator Variable

• Stores a list of values built up over time and remembers separate individual values.

• A "trigger" from the user or from a program that causes a specific part of the program to execute.

• An event such as mouse input in a graphical user interface, or such as an error or exceptions, triggers this section of code to execute.

• Maintains a running total.

Script

• A set of instructions. In Scratch this is a single stack of blocks belonging to one sprite or to the stage.

• To run a program or a single instruction.

• A graphics object that can be moved on top of or behind a background.

• A step-by-step procedure, like a recipe, but often involving decisions.

To run a program or a single instruction.

• Script

• Sprite

• Execute

• Algorithm

A step-by-step procedure, like a recipe, but often involving decisions.

• Sprite

• Execute

• Script

• Algorithm