Polymorphism

Term Key terms bank Y11 OOP

Definition

Different classes provide their own version of the same method name, so one call behaves differently depending on the object.

Example: speak() prints Woof for Dog and Meow for Cat.

Found in: syllabus, course specifications, school notes, past SDD papers.

Short version to memorise (key terms bank)

Same method name, different behaviour per class.

Where it is used in the test

Syllabus area: Y11 OOP.

Question types it can appear in

Multiple choice: Pick the option that matches the definition or example.
Python: override a method
Code reading: Code or algorithm reading: interpret a fragment and state its output or purpose.
Short answer: Define, outline or explain it and tie it to the scenario.

No past question in this bank is linked to this term yet. It can still be tested through the question types above.

Study links

Flashcard: Polymorphism in The Object-Oriented Paradigm (Year 11) · study that set
Memorise: Object-oriented concepts
Key terms bank entry: Polymorphism
Notes: Polymorphism (Year 11 content (Programming fundamentals, OOP, Mechatronics))
Notes: Python OOP: classes, inheritance, polymorphism, encapsulation (Python and SQL you must be able to write)
Notes: Design, develop and apply ML regression models using an OOP to predict numeric values,… (Software Automation (Year 12))
Notes: Programming paradigms (Year 11 content (Programming fundamentals, OOP, Mechatronics))

How to use it in an answer

A model sentence

General advice, built from the definition and example above

“Different classes provide their own version of the same method name, so one call behaves differently depending on the object.” Then apply it: speak() prints Woof for Dog and Meow for Cat.

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Command words used with it

General advice

No linked question shows the command word for this term. Across the past python and short answer questions in this bank the words used most are: Explain, Outline, Describe, Compare, Classify, Analyse. Check the actual word in your question.

Technique for the question types

Multiple choice: Read all four options, rule out wrong ones, pick one; no penalty for guessing so never leave blank.
Python: Write code that runs: indentation, quotes, define functions before calling them, print the required output, meet every listed requirement.
Short answer: One clear point per mark, use the stimulus and course terms, and answer the command word.

Common mistakes

Marker feedback on other questions of the same type (code and diagram feedback often applies across questions)

Python questions (2025 HSC exam Q19): process string inputs; use a selection structure; code must execute in the environment; use correct indentation; call functions in the main program after defining them.
Python questions (2025 HSC exam Q26): replicate the grid; use the random library; use selection and looping to access the list; include a method of checking the number of values; use meaningful variable names and constants; avoid overly complex structures such as nested IF loops.