This article explores ths history of theories about the shape of
our planet. It is the first in a series of articles looking at
the significance of geometric shapes in the history of
astronomy. Can you make sense of the charts and diagrams that
are created and used by sports competitors, trainers and
statisticians? This task depends on groups working
collaboratively, discussing and reasoning to agree a final
product. We're excited about this new program for drawing
beautiful mathematical designs. Can you work out how we made our
first few pictures and, even better, share your most elegant
solutions with us? A game for 2 people. Take turns joining two
dots, until your opponent is unable to move. I found these
clocks in the Arts Centre at the University of Warwick
intriguing - do they really need four clocks and what times
would be ambiguous with only two or three of them? The second in
a series of articles on visualising and modelling shapes in the
history of astronomy. Can you recreate these designs? What are