Computer Science

a block of code where a selection block is placed within another selection block

Nested selection

Using selection when developing programs

Arithmetic operators

Relational operators

Logical operators

Good programming practices

Selection challenge

Programming project: selection I

Programming project: selection II

In this unit pupils will explore the benefits of good programing practices and why subroutines are used in programs. They will create conditions in programs which use arithmetic, relational and logical expressions. They will develop their understanding of selection and explore nested selection.

Programming: selection

A type of loop that repeats a block of code.

A way to store multiple values in a list.

A selection statement with multiple branches.

A selection statement placed inside another selection statement.

What does the `lower()` method do when used on a string in Python?

In nested selection, if the outer condition is `False`, the inner condition will {{}}.

What would be displayed if the user enters "Jun" for the username?

What would be displayed if the user enters "Izzy" for the username and then "Dog1234" for the password?

What would be displayed if the user enters "Izzy" for the username and then "Fish4321" for the password?

Which of the following expressions will return False?

Which of these statements would return True for the following card?

The three logical operators are 'and', 'or' and '{{}}'.

Logical operators can be used alongside relational operators to build logical {{}} when more values need to be compared.

Which expressions would return True for this card?

Arithmetic expressions evaluate to a number. Logical expressions evaluate to {{}}.

Nested selection

Lesson outcome