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
Circle Area Investigation
Investigate where the formula A = πr² comes from by progressively slicing a circle into sectors and rearranging them into a rectangle-like shape. Students work through a guided derivation before completing randomized practice problems involving radius, diameter and area calculations.
Years 7–9Guided investigationArea of a Circle
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Circle Area Investigation 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.