Describe everyday chance
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A bag has 0 red counters and 4 counters of other colours. All counters are the same size and equally likely to be chosen. How would you describe choosing red?
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Answer: Impossible
- After any change there are 0 red counters out of 4.
- No matching counters means impossible; all matching means certain. Otherwise compare the matching count with half the total.
- The event is impossible.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Use certain, impossible, likely and unlikely carefully.
Read the official VCAA curriculum description (VC2M3P01)
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Activities to practise beyond the quiz
- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- VC2M3P01-C01Describe a possible event.
- VC2M3P01-C02Use the contents of a chance model.
- VC2M3P01-C03Reconsider likelihood after a change.
- VC2M3P01-C04Identify and discuss possible outcomes in practical and everyday chance situations
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Subskills
These practice subskills map to the curriculum topic. Guided activities cover skills beyond multiple-choice questions.
Descriptor-derived subskills
- D01Describe a possible eventDescribe a possible event.
- D02Use the contents of a chance modelUse the contents of a chance model.
- D03Reconsider likelihood after a changeReconsider likelihood after a change.