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Mathematics Illuminated is an award winning video series from Annenberg Media.

Some of the video topics include Primes, Infinity, Topology, Game Theory and Chaos.

After spending a few days in Greece, I headed back to Singapore via Dubai.

The route taken by Emirates avoids the worst trouble spots in the Middle East. As the sun set, there were strange lights on the aircraft wing.

I visited Nafplio in Greece recently. It is a harbor town with a rich history, due to its strategic position. The Franks, Venetians and the Ottomans all had a go at ruling Nafplio, before it served as the country’s capital once it gained independence.

In this Newsletter:

1. New in Interactive Mathematics – Vectors
2. Math tips – (a) Temperatures; (b) Exam fear
3. Latest IntMath Poll
4. RSS feeds for the Math Blog
5. From the math blog
6. Money and happiness

Santorini is a spectacular volcanic island in the Cyclades group of islands, a 20-minute flight southeast of Athens.

The main town of Thira is built precariously right on the edge of the volcano.

Greece had a large influence on Western thought and methods of governance. Here’s some recollections from my recent visit to Athens.

There’s a lot more to vectors than just forces and velocities.

In this Newsletter

1. Welcome to new subscribers
2. Math tips – (a) Statistics; (b) Study groups
3. Latest IntMath Poll
4. Joshua, a satisfied reader
5. From the math blog
6. The source of everything

Can we measure a country’s level of happiness? Can we properly compare the happiness of different countries?

What does it mean to be happy, anyway?

The Beamz is a music performance system that requires the player to break string-like laser beams. A USB connection to a computer drives the back end. Oh, and there’s some nice mathematics involved.