Selection with multiple paths
I can write selection statements to provide three or more paths to follow within a program.
Selection with multiple paths
I can write selection statements to provide three or more paths to follow within a program.
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Lesson details
Key learning points
- Multi-path selection checks successive conditions and selects one out of multiple paths to follow.
- Selection statements with conditions can be nested inside each other.
- If selection statements are nested then code blocks must be indented.
Keywords
Condition - an expression that evaluates to True or False
Multi-path selection - selection when there is more than one path for a program to follow
Nested - a block of code where a loop is contained within another loop
Common misconception
An if statement can only have two options.
An if statement can be paired with elif and else statements to create multi-path selection. This allows for multiple paths to follow in a program.
To help you plan your year 8 computing lesson on: Selection with multiple paths, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 computing lesson on: Selection with multiple paths, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 computing lessons from the Introduction to Python programming unit, dive into the full secondary computing curriculum, or learn more about lesson planning.
Equipment
All pupils require access to devices that can edit and run Python programs. Starter code files are available to copy or use directly via the Raspberry Pi Code Editor.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which of the following Python expressions evaluates to True?
Q2.Which Python code is used to create a block of code that will run based on whether something is True or False?
Q3.What is the output when the program is run?
12345score = 7
if score > 5:
print("score is greater than 5")
else:
print("score is not greater than 5")Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
Q4.Which logical operator in Python checks if two conditions are both True?
Q5.What will be the output of this Python code?
1234567is_raining = True
is_cold = False
if is_raining or is_cold:
print("Stay indoors")
else:
print("You can go outside!")Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
Q6.Arrange the following components of an if-else statement in the correct order.
Assessment exit quiz
6 Questions
Q1.Which of the following statements accurately describes multi-path selection in Python?
Q2.In Python, what is used to introduce an additional condition in a multi-path selection statement after an initial if statement?
Q3.What will be the output of the following Python code?
12345678910grade = 75
if grade >= 90:
print("A")
elif grade >= 80:
print("B")
elif grade >= 70:
print("C")
else:
print("Fail")Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords