Computer Science

used when there is more than one possible path for a program to follow

an expression that evaluates to True or False

selection when there is more than one path for a program to follow

Using selection when developing programs

Arithmetic operators

Relational operators

Logical operators

Nested selection

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

to repeat a set of instructions multiple times

to allow a program to follow different paths based on conditions

to execute all lines of code in a program

What is the purpose of selection in programming?

Which of the following is used for selection in Python?

What will be the output of the following code?

```number = 10
if number > 5:
    print(number + 5)
else:
    print(number - 5)```

A condition in programming is an expression that evaluates to either {{ }} or False.

The {{ }} statement is used when there are multiple conditions to check one after another.

What will the following program output?

```score = 30
if score > 30:
    print("You won!")
print("The end")```

Which flowchart symbol is sued to represent a decision?

Which of the following is the correct syntax for a print statement in Python?

In programming what is the answer to an IF question?

{{ }} is used when there is more than one possible path for a program to follow.

What statement is used to obtain a value for a variable from a user?

Using selection when developing programs

Lesson outcome