"minus" and "negative" 24 Dec 2008
In the past I have commented on the QI forums that the difference between "negative" and "minus" was a good one and worth keeping*. I didn't...
April 2009: News
At long last, the ATM have published the Primitives Posters. To purchase the poster set, visit the ATM online shop. To find out more about the Primitives idea, click here.
About
ptolemy.co.uk is the website of Alec McEachran, a maths and philosophy teacher, and software developer.
Alec's first title, Furbles was published by Sherston Publishing in January 2007.
Primitives, first published in late 2007, is free software for visualising numbers and their relationships. It was featured in an article in Mathematics Teacher magazine in March 2008.
The ptolemy.co.uk blog is Alec's blog about his interests in the overlapping worlds of maths education, philosophy education, and technology.
Some other Flash, Flex, AIR and ActionScript projects, including a small collection of Flash/AS3 experiments is also available in the dev section.
Recent Blog Posts
Geometry, by eye 7 Oct 2008
A quickie: here's an interesting game from Canada where users have to find various interesting geometrical properties by eye and are assessed...
Maths Education and the Metric System 7 Sep 2008
The following conversation in Metric Views catches the attention both for the interesting article and the subsequent...