A mathematical operation that returns the remainder of a division of two arguments.

A repeating program structure that involves looping or repetition.

A named sequence of instructions that may take inputs and may report a value.

An if or if-else statement inside another if-else statement.

An ordered sequence of items.

A sequence of characters (letters, digits, punctuation, etc.).

A true or false statement.

The position number of an item in a list.

Hiding complexity by creating simplified representations of complex systems through data structures and procedures.

A sequence of connected instructions that carry out a purposeful action.

A list used as an item of another list.

A statement that ends the execution of a function and returns control to the calling function.

A means of deciding which part of an algorithm to run based on whether a condition is true or false.

Looking at each item of the list.

Is the input name, such as the number of branches, set in the block definition and never changes.

Is the input value, such as 6 for a hexagonal pinwheel, given each time the block is run and can be different each time.

A statement that keeps running forever in a program.

A mathematical operation used in programming to perform specific operations on variables or values.

A statement that consists of either a constant value or a call to a reporter block including its inputs.

A programming operation that allows you to determine the remainder of the division of two numbers.

The ability to easily understand the code written by humans.

An early sample, model, or release of a product built to test a concept or process.

The act of deciding which part of an algorithm to run based on whether a condition is true or false, often involves if statements.

Another name for an item in a list.