Links: Symmetry, Education, Codes

• Marcus du Sautoy's TED talk on symmetry makes me want to study more math.
• I mentioned Escher in my recent post on tesselation. Here's a cool article on the math behind Escher's 'Print Gallery'.
• This free book looks good: Expanding the Science and Technology Learning Experiences of Children, by David Moursund. 
• Video of  Uri Treisman, on the problem of remedial math courses.

I'm now following another education blog, Re-Educate Seattle, by Steve Miranda. Good starting points - his take on redefining  education intrigued me, and his story about how focused students were,  with no teacher in sight. This blog often brings a smile to my face. (I do wish schools like this were available as part of the public schools.)


My first math-related love was codes and ciphers. Recently two code-related links have looked interesting:

• The FBI wants help breaking a code! (It may help them figure out who murdered the man who used the code. More at Wikipedia.)
• Not exactly codes and ciphers. A recording and a question: Could this be a message from aliens, or is it a fake? How can we tell? It's way too short for me to have any ideas.