Computer Science

a tool used to track the values of variables and the flow of execution in an algorithm or program, step by step

an expression that evaluates to True or False

Using trace tables

While loops

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

logical expression controlling program flow

to track the values of variables during program execution

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

When is the condition in a `while` loop checked?

Arrange these steps in the correct order for using a trace table.

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

What does a condition in programming evaluate to?

What is the keyword for condition-controlled iteration in Python?

What happens if the condition in a `while` loop is always True?

Using trace tables

Lesson outcome