## Activity Introduction

Quick summary: This lesson enables teachers to guide students through some real data sets that reflect consumer recycling behaviour statistics. They will note trends in the recycling of printer cartridges in Australia, using data gathered by the organisation, Cartridges 4 Planet Ark. Activities include working with tabulated data and drawing conclusions. This lesson meets selected Australian Curriculum outcomes for Years 7 and 8 in the subject of Mathematics.

This lesson has been developed as part of the Schools Recycle Right Challenge for Planet Ark’s National Recycling Week. Register your lesson or other activities so they can be counted towards the national achievement and to receive other free support materials.

Learning goals:

• Students will learn about one important cartridge recycling program called ‘Cartridges 4 Planet Ark’ currently operating in Australia.
• Students will consolidate their skills in interpreting tabulated data.

General capabilities: Numeracy, Critical and creative thinking.

Australian Curriculum content descriptions:

Year 7 Mathematics

• Calculate mean, median, mode and range for sets of data. Interpret these statistics in the context of data (ACMSP171)
• Describe and interpret data displays using median, mean and range (ACMSP172)
• Find percentages of quantities and express one quantity as a percentage of another, with and without digital technologies. (ACMNA158)

Year 8 Mathematics

• Explore the variation of means and proportions of random samples drawn from the same population (ACMSP293)
• Solve problems involving the use of percentages, including percentage increases and decreases, with and without digital technologies (ACMNA187)
• Carry out the four operations with rational numbers and integers, using efficient mental and written strategies and appropriate digital technologies (ACMNA183)

Time needed: 60 minutes.

Resources required: Internet, Student Worksheet, Cartridge Recycling Resource Sheet, Cartridge recycling – student worksheet, LS Student worksheet – recycling cartridges.

Key words: National Recycling Week, Resources, Rubbish, Re-using, Recycling.

Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.

## Teacher preparation

What you will need: Photocopy the Cartridge Recycling Resource Sheet and Cartridge recycling - student worksheet which contains the Cartridge Recycling Data - one copy of each per student. Alternatively, teachers could use a Smartboard, large monitor or projection screen to display the Resource material by going directly to the website.

Teacher content information: Planet Ark founded National Recycling Week to bring a national focus to the environmental benefits of recycling. Now in its 17th year, this highly regarded annual campaign continues to educate and stimulate behaviour change by promoting kerbside, industrial and community recycling initiative. It also gives people the tools to minimise waste and manage material resources responsibly at home, work and school.

## Teaching sequence

10 minutes – preliminary activity – viewing and discussion of the images selected from the 'Cartridges 4 Planet Ark' website

10 minutes – reading of background resource materia

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