Collect as many of the following items as possible. Each item will be awarded a mark out of ten for its quality or the ingenuity involved in finding it.

ITEM | SCORE | |
---|---|---|

A twig exactly 12 inches long | ||

Five pebbles, together weighing exactly a pound | ||

A pendulum which swings an exact second | ||

A natural spiral | ||

A perfectly symmetric leaf | ||

An item with rotational symmetry | ||

A perfect equilateral triangle, made from natural materials, laid out on the ground, each side at least 2m long | ||

Two congruent shapes | ||

Two similar shapes | ||

A green blade | ||

Find two trees exactly 5m apart | ||

Work out the direction of the sun from this place | ||

A natural fractal, length exactly twice the width | ||

Something never been seen before | ||

A Fibonacci number in nature | ||

Fir cone, 5cm long | ||

Total |

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Transum,

Thursday, May 08, 2008

"This is a fine activity for a hot sunny afternoon in a park with trees. Print out a one copy of the list above, one for each pair of children. If the children are quite young ensure that there is plenty of teacher supervision and clearly state the boundary of the game area beyond which they must not roam. Have a clear way to end the game either a time limit of a blast of a whistle that can be heard across the playing area.

At the end of the game each pair can be marked out of ten for each object they have found and how imaginative they have been."