a statement that can be either true or false

Conditional statements

Computing

The micro:bit

Selection to control the flow in a program

Sensing inputs

Designing a step counter

Making a step counter

This unit brings together all the four programming constructs: sequence, repetition, selection and variables whilst also utilising a physical device - the micro:bit. Pupils begin with a simple program to build and test and then take on three new projects, with each adding more depth and complexity.

Sensing movement with physical computing

What is an operator in a conditional statement?

Which operator checks that an initial value is greater than the next value?

The program always runs the first action.

The program skips to the else part at the end of the statement.

What happens if none of the conditions in an if... else if... statement are true?

Only the first true condition’s outcome will run.

Which statement about if... else if... statements is correct?

If the first condition is true, its first outcome runs.

If the first condition is false, it checks the next condition.

If the next condition is true, its outcome runs for that condition.

If no conditions are true, the program runs the outcome for the else statement.

Arrange these steps to show how a program uses if... else if... statements to decide what to do:

What word means choosing between actions in a program?

If the condition is true, it runs the “then” commands.

If the condition is false, it runs the “else” commands.

Arrange these steps for using an if... then... else statement:

What happens in an if... then... else statement if the condition is false?

a structure that checks a condition and picks what to do

Which of these best describes a program’s flow?

What does selection use to decide which commands to run?

Starter Quiz