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Cellular is an animation that helps you make geometric sequences composed of square cells.

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Geometric Parabola

Explore what happens when you draw graphs of quadratic equations with coefficients based on a geometric sequence.

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Summing Geometric Progressions

Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?

Squaring the Circle and Circling the Square

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Hint for part 2

You might need to ask your teacher to explain to you how to sum a Geometric Progression.

Alternatively there are some ideas on the NRICH site- but this diagram might give you some ideas: