### Plants

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

### 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.

### 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:

This activity has been particularly created for the highest attaining. (The pupils that you come across in many classrooms just once every few years.)

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.

$1$

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$5$