Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...
Finish all stages of the extra large pyramid Sun God (50) Finish all stages of the small pyramid Super Stone Carver (20) ...
Form pyramids of 52 cards each by clicking cards with a value one more or less than the previous card. The aim is to try to form series of cards without having to turn over a new card. If no more ...
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