Quick summary: As a ‘thought starter’ students watch a short clip about an innovative concept called Sealeaf, which explores open-sea farming. Students will investigate the global mean sea levels from 1880 to 2013. Using authentic data they will analyse a graph by considering the historic trends, calculating gradients of line segments and commenting on what the gradient represents in context. They will also have the opportunity to investigate sea level rise and who will be most affected.
- Students understand how gradient and rate of change relates to authentic data.
- Students know how to calculate midpoints and gradient.
- Students discover the impact of sea level rise on a global scale and how the levels are changing over time.
- Students take personal action by undertaking further investigation and increasing community awareness.
General capabilities: Numeracy, Critical and creative thinking.
Cross-curriculum priority: Sustainability OI.1
Australian Curriculum content description:
Year 9 Mathematics:
- Solve problems involving direct proportion. Explore the relationship between graphs and equations corresponding to simple rate problems (ACMNA208)
- Find the midpoint and gradient of a line segment (interval) on the Cartesian plane using a range of strategies, including graphing software (ACMNA294)
In line with the Australian Curriculum questions are graded to cover understanding, fluency, problem solving and reasoning.
Syllabus outcomes: MA3‑2WM.
Topic: Number and Algebra, Climate change
Time required: 40-60 min
Level of teacher scaffolding: Low – teacher may need to demonstrate skills.
Resources Required: Student Worksheet, internet access, Climate Change Digital Toolbox.
Homework and extension opportunities: Students have the opportunity increase their personal awareness by writing a media release to include information from the lesson and personal research on increasing sea levels.
Key words: Cartesian plane, mid-point, gradient, coordinate points, data, sea level, climate change.
Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.