A random ramble for teachers through some resources that might add a little life to a statistics class.
For teachers. About the teaching of geometry with some examples from school geometry of long ago.
Suggestions for worthwhile mathematical activity on the subject of angle measurement for all pupils.
In this article for teachers, Bernard gives an example of taking an initial activity and getting questions going that lead to other explorations.
This article -useful for teachers and learners - gives a short account of the history of negative numbers.
If you think that mathematical proof is really clearcut and universal then you should read this article.
Here are examples of how two schools set about the task of ensuring that problem solving was an integral part of their curriculum.
This article for teachers suggests ideas for activities built around 10 and 2010.
Video showing how to use the Number Plumber