Programming project: subprograms II
Lesson details
Learning outcome
I can implement a program from a design and perform testing to ensure it works as expected.
Key learning points
- Implementation of solution is where you take a plan and create the solution.
- A program should be tested with a range of test data.
- Erroneous data is data that should not be accepted by the program or it will cause an error.
- Boundary test data is data of the correct type which is on the very edge of being valid.
- Normal data is data that should be accepted by a program. This is data that you would expect a user to enter.
Keywords
Erroneous - data that should not be accepted by the program or it will cause an error
Boundary - data that should either be accepted or rejected by a program, it tests the data right at the boundary of a range
Normal - data that should be accepted by a program, this is data that you would expect a user to enter
Common misconception
A system should only be tested with normal data that will be expected.
A system should be tested with a range of test data, including erroneous data that is not meant to be accepted.
Teacher tip
This sceanrio can be tailored to better suit the interests of your pupils. The more they are familiar with the context of the problem they are solving, the easier it will be for them to focus on the creation of the program rather than understanding the problem itself.
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.What is the purpose of a structure chart?
Q2.Which flowchart symbol is used to represent a decision?
Q3.Which of the following correctly defines a parameter in a subprograms?
Q4.A chart is a diagram used to illustrate the steps of an algorithm.
Q5.Match the flowchart symbols with their meaning.
start/end of the program
process
decision
input/output
Q6.What should be used if a subprogram needs to pass a value back to the main program?
Assessment exit quiz
6 Questions
Q1.What is the purpose of iterative testing in programming?
Q2.Which type of test data is used to check that values at the edge of a range are accepted?
Q3.Final testing occurs when ...
Q4.A test is a way to thoroughly check that a program is working correctly.
Q5.Using a of test data helps ensure that a program correctly handles all possible inputs.
Q6.Match the test data type with its meaning.
data that should not be accepted because it causes an error
data at the limits of validity
data that should be accepted as valid input
To help you plan your 10 computer science lesson on: Programming project: subprograms 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: subprograms 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: subprograms unit, dive into the full secondary computer science curriculum, or learn more about lesson planning.