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A Problem of Time

Consider a watch face which has identical hands and identical marks for the hours. It is opposite to a mirror. When is the time as read direct and in the mirror exactly the same between 6 and 7?

Eight Dominoes

Using the 8 dominoes make a square where each of the columns and rows adds up to 8


The ten arcs forming the edges of the "holly leaf" are all arcs of circles of radius 1 cm. Find the length of the perimeter of the holly leaf and the area of its surface.

Flower Power

Age 11 to 16
Challenge Level
It is not envisaged that this problem would be used as a class problem.  It is more appropriate for an enthusiastic student or small group of students looking for a challenge to work on independently.

Students who want help in getting going with Logo could try some of the problems in Fast Forward Into Logo or Making Moire Patterns.