## Activity Introduction

**Quick Summary:** Students will investigate the state of the carbon budget designed to reduce emission by 2050. Given the budget and the percentage of emissions used between 2000-2013 students will calculate the rate of use, consider effects of percentage increases and decreases in emission rates for the remaining time frame and the anomalies between scientists and their own predictions. Students will then have the opportunity to use the skills applied through the worksheet the create their own plan for the reduction of emission.

**Learning goals:**

- Students understand how to change quantities to percentages and how to calculate percentage increase and decrease.
- Students discover the impact of small and large percentage increase and decrease in carbon emissions and the effect of average rates emissions over time.

**21st century skills:**

### Australian Curriculum Mapping

**Content descriptions: **

**Year 8 Mathematics:**

- Solve problems involving the use of percentages, including percentage increases and decreases, with and without digital technologies (ACMNA187)
- Solve a range of problems involving rates and ratios, with and without digital technologies (ACMNA188)

**General capabilities:** Numeracy, Critical and creative thinking.

**Cross-curriculum priority:** Sustainability OI.1, OI.3.

**Relevant parts of Year 8 Mathematics achievement standards:** Students solve everyday problems involving rates, ratios and percentages.

**Topic:** Number and Algebra, Number and Place Value, Climate Change.

**Time required:** 60 min

**Level of teacher scaffolding:** Medium – teacher may need to demonstrate some calculations. Eg percentages of quantities, increasing/decreasing by a percent.

**Resources required:** Student Worksheet – one copy per student OR computers/tablets to access the online worksheet. Calculator, Overspending our carbon budget, Global carbon budget.

**Digital technology opportunities:** Digital sharing capabilities.

**Homework and extension opportunities:** Students create a budget to reduce carbon emission to zero by 2050 decreasing rates of emissions by a certain percent over their chosen time frames.

**Key words:** Percentage, rate, fraction, carbon budget, climate change, carbon emissions

*Cool Australia acknowledges the contribution of The Commonwealth and Climate Commission. *

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