lesson
Use tests that reveal different faults
1 · Learn
A test plan states an input, expected result and actual result. Include cases that exercise different branches, not only inputs you already know work.
Change one identified problem and rerun the relevant tests. Keep a working copy when possible. A program passing one test is not proof that every input works.
2 · Worked example
For a pass threshold of at least 6, I test 5, 6 and 7. If 6 fails, I check whether the condition wrongly uses greater than rather than at least.
3 · Your turn
A program should accept numbers at least 10. Which three nearby values help test its boundary?
Check your answer
9, 10 and 11. They test below, exactly at and above the threshold.
4 · Apply your learning
Write a small test table for your selection project. Record failures honestly and explain the change that addresses each one.
Adult guidance and safety
Use adult-approved offline or school-managed tools, invented data and original media. Keep projects private unless sharing is explicitly approved. Paper traces support, but do not replace, practical programming and saved digital work. No real passwords or personal records belong in these exercises.
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Check a calculation · Year 5 onward
Use this only when your teacher or adult allows a calculator for the task. Show your thinking first. It does not replace mental or written arithmetic and does not mark your lesson answer.
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