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- A1a – Using and interpreting algebraic notation
- A2a – Substituting numerical values into formulae and expressions
- G9a – Circle parts – definitions and properties (an understanding of radius and diameter is helpful)
- G16a – Area of rectangles (an understanding of area is helpful)
Starting point: approximately how many diameters fit into the circumference?
Just by looking, can you estimate roughly how many diameter-lengths of string you could arrange around the circumference without overlapping? Hit animate to see the answer.
Circumference of a circle
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- Slides in PPTX (with click-to-reveal answers)
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