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Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?

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Geometry and Gravity 1

This article (the first of two) contains ideas for investigations. Space-time, the curvature of space and topology are introduced with some fascinating problems to explore.

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Squareo'scope Determines the Kind of Triangle

A description of some experiments in which you can make discoveries about triangles.

Extending Great Squares

Stage: 2 and 3 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3
The activity is intended to extend Grrrreat Squares for those who need/want something much more challenging.

Choose one or more of the following five sets of pictures and explore them further for number patterns, area implications, trigonometrical facts and predictions.