Computer Science

the process of repeating a sequence of instructions within a program loop

an expression that evaluates to True or False

While loops

Using trace tables

For loops

Nested loops

Randomisation

Validating data input in a program

Designing robust programs

Programming project: iteration I

Programming project: iteration II

In this unit pupils discover how iteration is used to replicate parts of a program. They will analyse the difference between count and condition controlled iteration and how trace tables can be used to trace through loops. They will explore data validation techniques and robust program design.

Programming: iteration

What Python command is used for condition-controlled iteration?

What does a condition in a while loop do?

What happens if the condition in a while loop is False initially?

Order the steps of a condition-controlled loop.

Write the code to create iteration that will run if the variable num is over 5.

What Python function is used to receive data that the user enters?

Which of these is a logical operator in Python?

What is the purpose of the `if` statement?

Match the examples to their descriptions.

While loops

Lesson outcome