Programming project: selection II
Lesson details
Learning outcome
I can implement a solution to a problem that requires the use of selection.
Key learning points
- Testing a program can help you to identify and spot errors.
- A test plan is a document that sets out the tests that will be carried out during testing.
- Once testing is complete, a program can be refined to correct any errors and make improvements.
Keywords
Test plan - a document that sets out the tests that will be carried out during testing
Syntax error - an error where the code has been structured incorrectly and the syntax rules haven’t been followed
Logic error - an error where the program will run, but won’t do what the programmer expected
Common misconception
If a program has a logic error it will not work and will give error messages.
Logic errors are errors that cause a program to work incorrectly or unexpectedly. With a logic error, the program can be run without failing, but it does not return the expected result. The user might not realise that there is an error.
Teacher tip
This is the second lesson of a project to allow pupils to apply their understanding of selection. It would be benefical if pupils have completed part I before attempting this lesson.
Equipment
Pupils will need access to a device that can edit and run Python programs. Examples in this lesson use the RPF Code Editor https://oak.link/python-editor
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1. is a way of expressing an algorithm that is independent of a specific programming language.
Q2.What is the missing stage of the software development life cycle?
Planning,
analysis,
,
development,
testing,
implementation.
Q3.At which stage of the software development life cycle do you start to create a program?
Q4.What is nested selection in programming?
Q5.Match the logical operator to its function.
returns True if both conditions are True
returns True if at least one condition is True
reverses the result of a condition
Q6.Match the relational operator to its meaning.
greater than
less than
equal to
not qual to
greater than or equal to
less than or equal to
Assessment exit quiz
6 Questions
Q1.What is the purpose of a test plan in programming?
Q2.A error occurs when the program may run, but does not perform as expected.
Q3.A error happens when the program has incorrect syntax and will not run.
Q4.Match the test data type to its description.
values that should be accepted as they are valid
values that should not be accepted and will cause an error
values that are at the edge of being valid
Q5.Which of the following is an example of erroneous test data for a program that asks for an age (expected input: an integer)?
Q6.In the software development life cycle, is the stage that follows development and involves checking for errors.
To help you plan your 10 computer science lesson on: Programming project: selection II, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 10 computer science lesson on: Programming project: selection II, 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.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 computer science lessons from the Programming: selection unit, dive into the full secondary computer science curriculum, or learn more about lesson planning.