Stage: 3, 4 and 5 Challenge Level: 
This is still a work in progress but it is sufficiently advanced to run the examples in this worksheet .
(Just avoid the Turtle Graphics for now.)
To visit the application, click on the link below:
Flex GeomLab
Codes and cryptography. engineering. Mathematical modelling. Programming. Combinatorics. Logic. Tessellations. Algorithms. Introducing algebra. Practical Activity.
Published .
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NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk