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Financial Mathematics and Proportion · Term 4

Profit and Loss

Students will calculate percentage profit and loss, and determine original values after a percentage change in business scenarios.

Key Questions

  1. How do businesses use percentage markups to ensure they cover costs and generate profit?
  2. What is the mathematical difference between a discount and a rebate?
  3. Justify why calculating profit/loss as a percentage of cost price is often preferred.

ACARA Content Descriptions

AC9M9N04
Year: Year 9
Subject: Mathematics
Unit: Financial Mathematics and Proportion
Period: Term 4

About This Topic

Interactive Storytelling moves beyond the linear 'beginning, middle, end' to explore narratives where the audience has agency. In Year 9, students design non-linear experiences for games, apps, or interactive films. This topic aligns with ACARA's focus on using digital technologies to create complex, multi-layered media artworks.

Students learn to create 'branching narratives' where user choices lead to different outcomes. This requires a high level of logical thinking and empathy, as students must anticipate how an audience might react. This topic is best taught through collaborative problem-solving and 'paper prototyping', where students map out their stories physically before moving to digital tools, ensuring the narrative logic is sound through peer testing.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionInteractive storytelling is just for video games.

What to Teach Instead

It is used in marketing, education, and interactive documentaries. Active workshops on 'branching paths' show students how these techniques apply to many digital platforms.

Common MisconceptionYou need to be a coder to make an interactive story.

What to Teach Instead

The core of the work is the narrative design. Tools like Twine or even hyperlinked Google Slides allow students to focus on the 'story' rather than the 'code'.

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Frequently Asked Questions

What is the best tool for teaching interactive stories?
Twine is a free, open-source tool that is perfect for Year 9. It uses a simple visual map to show how different 'passages' of a story connect, making the logic easy to follow.
How can student-centered teaching help with narrative design?
Interactive stories are all about the 'user experience'. By having students 'playtest' each other's work constantly, they get immediate feedback on whether their branching logic actually makes sense to someone else.
How do I grade a story with multiple endings?
Focus on the 'cohesion' of the world and the 'impact' of the choices. A good interactive story should make the user feel like their choices actually mattered to the outcome.
What ACARA standards does this cover?
It addresses AC9AME10D01 (skills with technologies) and AC9AME10E01 (creating media artworks that represent complex ideas).

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