Making sound decisions about purchases is an essential use of mathematical thinking…
In this lesson, students consider pairs of alternative discount vouchers in a restaurant and reason about which one will save them more money. This involves comparing percentage reductions when the total bill is of different sizes, and the answer depends on how much money is being spent.
There are opportunities to consolidate understanding of percentages and graphical representations of relationships to make sense of a real-life problem.
Why teach this?
This lesson helps students to make reasoned choices about which option will save them more money.
Key curriculum links
- Extend understanding of the number system; make connections between number relationships, and their algebraic and graphical representations
- Begin to model situations mathematically and express the results using a range of formal mathematical representations
- Interpret fractions and percentages as operators
This download includes the full PDF lesson plan, plus a PDF of all the vouchers used in the lesson.