Quick summary: Students will obtain an understanding of large numbers by relating figures concerning paper usage in Australia to football fields. They will use area formulas and convert between units to solve problems. Students will also compare how much paper is used, recycled and thrown away as rubbish per year in Australia.
This lesson has been developed in partnership with Visy. For over 60 years Visy has been striving for sustainability, reducing the amount of waste going to landfill by collecting recyclable materials and recycling them into new paper and packaging products. Click here to find out more about Visy and their innovative work in recovering and transforming recyclable materials into new products to preserve our earth’s precious resources.
- Students will be able to use area and conversion of values to understand large values.
- Students will understand the amount of paper being used and recycled in Australia.
21st century skills:
Australian Curriculum Mapping
Year 7 Maths: Standard area
- Establish the formulas for areas of rectangles, triangles and parallelograms, and use these in problem-solving (ACMMG159).
Year 8 Maths: Standard area but provide less scaffolding on tasks
- Choose appropriate units of measurement for area and volume and convert from one unit to another (ACMMG195).
General capabilities: Numeracy, Critical and creative thinking, Ethical understanding.
Cross-curriculum priority: Sustainability OI.8.
Relevant parts of Year 7 Mathematics achievement standards: Students use formulas for the area and perimeter of rectangles and calculate volumes of rectangular prisms.
Relevant parts of Year 8 Mathematics achievement standards: Students convert between units of measurement for area and volume.
Topic: Waste, Sustainability.
Unit of work: Bright Sparks – Secondary Mathematics.
Time required: 80 mins.
Level of teacher scaffolding: Medium – the teacher will need to facilitate an investigation, class discussion and provide further information to students during the course of the lesson.
- Student Worksheets (one copy per student).
- Device capable of projecting images and quotes.
- A ream of A4 paper to map out the area of a designated space (e.g. classroom). Try to use paper from your staffroom recycling bin to avoid wastage.
- Measuring tapes to measure the dimensions of the designated space.
- Thumb tacks or small weights to keep the paper from moving or blowing away.
- Scales (if you choose to weigh paper).
- Rulers (if you choose to measure paper).
Keywords: Area, paper usage, recycling, conversion, large figures.
The information and statistics included in this document are approximate and have been simplified for educational/illustrative purposes. They should not be relied upon for any other purpose.
Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.