Area of Quadrilaterals Challenge
A randomised 10-question challenge where students calculate area for triangles, parallelograms, trapeziums, rhombuses, kites and composite shapes, with new numbers each…
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Mathematics · Measurement & Trigonometry
The Coastline Paradox — How Long Is Australia's Coastline?
Why do official sources disagree about the length of Australia's coastline? Students walk rulers of different lengths around the real mainland coast, measure maps at different scales, find the scale-factor pattern (log graphs and fractal dimension for Year 10), compare the Kimberley with the Great Australian Bight, and explore the Koch snowflake.
Years 8–10Guided investigationThe Coastline Paradox
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The Coastline Paradox — How Long Is Australia's Coastline? is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.